Reliable, meaning dependable or trustworthy, has various antonyms that convey an opposite meaning. Unreliable, the most common antonym, signifies a person or a thing that cannot be counted on, is not consistent, or fails to meet expectations. Another antonym is undependable, implying that something or someone cannot be relied on or trusted to fulfill expectations or obligations. The term flimsy, suggesting that something or someone is weak, fragile, or unstable, is also an antonym of reliable. The word erratic refers to being unpredictable, inconsistent, and irregular, conveying the opposite meaning of dependable, another antonym of reliable. Finally, the term treacherous refers to being dangerous or deceptive, signifying an entirely different characteristic to the word reliable.

What are the antonyms for Reliable?

• adj.

  • able or prone to err
  • fallible
  .
  • arbitrary
  • in consistent
  ,
  • in judicious
  ,
  • in-consistent
  ,
  • in-judicious
  ,
  • un accountable
  ,
  • un reasonable
  ,
  • un scientific
  ,
  • un-reasonable
  ,
  • un-scientific
  .
  • capricious
  • Humorsome
  ,
  • Vagarious
  ,
  • YOYO
  ,
  • any way the wind blows
  ,
  • any way wind blows
  ,
  • changeful
  ,
  • helter skelter
  ,
  • helterskelter
  ,
  • in-constant
  ,
  • more changeful
  ,
  • more vagarious
  ,
  • more yo yo
  ,
  • more yo-yo
  ,
  • more yoyo
  ,
  • most changeful
  ,
  • most humorsome
  ,
  • most vagarious
  ,
  • most yo yo
  ,
  • most yo-yo
  ,
  • up down
  ,
  • yo yo
  ,
  • yo-yo
  .
  • careless, reckless
  • irresponsible
  .
  • changeable
  • Permutable
  ,
  • commutative
  ,
  • flighty
  ,
  • in decisive
  ,
  • in-decisive
  ,
  • mercurial
  ,
  • more commutative
  ,
  • more fluctuating
  ,
  • more permutable
  ,
  • more reversible
  ,
  • more revocable
  ,
  • more shifting
  ,
  • more transformable
  ,
  • more transitional
  ,
  • more vagrant
  ,
  • most commutative
  ,
  • most fluctuating
  ,
  • most permutable
  ,
  • most reversible
  ,
  • most revocable
  ,
  • most shifting
  ,
  • most transformable
  ,
  • most transitional
  ,
  • most vagrant
  ,
  • mutable
  ,
  • re vocable
  ,
  • re-vocable
  ,
  • reversible
  ,
  • revocable
  ,
  • shifting
  ,
  • trans formable
  ,
  • trans-formable
  ,
  • transformable
  ,
  • transitional
  ,
  • un settled
  ,
  • un steadier
  ,
  • un steadiest
  ,
  • un steady
  ,
  • un-settled
  ,
  • un-steadier
  ,
  • un-steadiest
  ,
  • un-steady
  ,
  • unpredictable
  ,
  • unsteadiest
  ,
  • unsteady
  .
  • dangerous
  • unsafe
  .
  • deceitful
  • Astucious
  ,
  • Double dealing
  ,
  • Impostrous
  ,
  • de signing
  ,
  • de-signing
  ,
  • dis ingenuous
  ,
  • dis-ingenuous
  ,
  • doubledealing
  ,
  • in direct
  ,
  • in-direct
  ,
  • mis leading
  ,
  • mis-leading
  ,
  • more astucious
  ,
  • more deceiving
  ,
  • more impostrous
  ,
  • most astucious
  ,
  • most beguiling
  ,
  • most deceiving
  ,
  • most feline
  ,
  • most impostrous
  ,
  • most rascal
  ,
  • two faced
  ,
  • twofaced
  ,
  • under hand
  ,
  • under handed
  ,
  • under-hand
  ,
  • under-handed
  .
  • deceitful, pretending
  • hypocritical
  .
  • deceptive
  • Imposturous
  ,
  • bummest
  ,
  • more deluding
  ,
  • more imposturous
  ,
  • most imposturous
  .
  • dishonest
  • deceptive
  ,
  • dis honest
  ,
  • dis reputable
  ,
  • dis-honest
  ,
  • dis-reputable
  ,
  • more bluffing
  ,
  • more cheating
  ,
  • more double crossing
  ,
  • more double-crossing
  ,
  • more hoodwinking
  ,
  • more swindling
  ,
  • more two timing
  ,
  • more two-timing
  ,
  • more twotiming
  ,
  • most backbiting
  ,
  • most bluffing
  ,
  • most double crossing
  ,
  • most double-crossing
  ,
  • most doublecrossing
  ,
  • most hoodwinking
  ,
  • most swindling
  ,
  • most two timing
  ,
  • most two-timing
  ,
  • most twotiming
  ,
  • un fair
  ,
  • un fairer
  ,
  • un fairest
  ,
  • un principled
  ,
  • un scrupulous
  ,
  • un-fair
  ,
  • un-fairer
  ,
  • un-fairest
  ,
  • un-principled
  ,
  • un-scrupulous
  .
  • dishonest, disloyal
  • treacherous
  .
  • dishonest, insincere
  • deceitful
  .
  • disloyal
  • faithless
  .
  • doubtful
  • dubious
  ,
  • unstable
  .
  • doubtful, changeable
  • uncertain
  .
  • dubious
  • Trustless
  ,
  • dis inclined
  ,
  • dis-inclined
  ,
  • far fetched
  ,
  • in definite
  ,
  • in determinate
  ,
  • in-definite
  ,
  • mis trustful
  ,
  • mis-trustful
  ,
  • more trustless
  ,
  • more unassured
  ,
  • more unconvinced
  ,
  • most trustless
  ,
  • most unassured
  ,
  • most unconvinced
  ,
  • touch and go
  ,
  • touch go
  ,
  • un assured
  ,
  • un clear
  ,
  • un clearer
  ,
  • un clearest
  ,
  • un convinced
  ,
  • un decided
  ,
  • un likelier
  ,
  • un likeliest
  ,
  • un likely
  ,
  • un sure
  ,
  • un trustier
  ,
  • un trustiest
  ,
  • un trusty
  ,
  • un-assured
  ,
  • un-clear
  ,
  • un-clearer
  ,
  • un-clearest
  ,
  • un-convinced
  ,
  • un-decided
  ,
  • un-likelier
  ,
  • un-likeliest
  ,
  • un-likely
  ,
  • un-sure
  ,
  • un-trustier
  ,
  • un-trustiest
  ,
  • un-trusty
  ,
  • unassured
  ,
  • unconvinced
  ,
  • untrustier
  ,
  • untrustiest
  ,
  • untrusty
  .
  • erratic
  • Fluctuant
  ,
  • changeable
  ,
  • directionless
  ,
  • in calculable
  ,
  • in-calculable
  ,
  • more directionless
  ,
  • more fluctuant
  ,
  • more oddball
  ,
  • more undirected
  ,
  • most directionless
  ,
  • most fluctuant
  ,
  • most undirected
  ,
  • un directed
  ,
  • un usual
  ,
  • un-directed
  ,
  • un-natural
  ,
  • un-usual
  ,
  • undirected
  .
  • erroneous
  • inaccurate
  .
  • explosive, changeable
  • volatile
  .
  • faithless
  • more doublecrossing
  ,
  • more unconverted
  ,
  • more unloyal
  ,
  • most cheating
  ,
  • most unconverted
  ,
  • most unloyal
  ,
  • un believing
  ,
  • un converted
  ,
  • un faithful
  ,
  • un loyal
  ,
  • un true
  ,
  • un truer
  ,
  • un truest
  ,
  • un-believing
  ,
  • un-converted
  ,
  • un-faithful
  ,
  • un-loyal
  ,
  • un-true
  ,
  • un-truer
  ,
  • un-truest
  ,
  • unconverted
  ,
  • unloyal
  .
  • fallible
  • Errable
  ,
  • in question
  ,
  • more errable
  ,
  • most errable
  .
  • false
  • Crocker
  ,
  • Forsworn
  ,
  • Misrepresentative
  ,
  • casuistic
  ,
  • contrary fact
  ,
  • contrary to fact
  ,
  • cooked-up
  ,
  • cookedup
  ,
  • counter factual
  ,
  • counter-factual
  ,
  • crockest
  ,
  • dis guised
  ,
  • dis honorable
  ,
  • dis loyal
  ,
  • dis-guised
  ,
  • dis-honorable
  ,
  • dis-loyal
  ,
  • falsehearted
  ,
  • in valid
  ,
  • in-valid
  ,
  • madeup
  ,
  • makebelieve
  ,
  • mis representative
  ,
  • mis taken
  ,
  • mis-representative
  ,
  • more apostate
  ,
  • more concocted
  ,
  • more cooked up
  ,
  • more cooked-up
  ,
  • more cookedup
  ,
  • more forsworn
  ,
  • more imitation
  ,
  • more misrepresentative
  ,
  • more mythomaniac
  ,
  • more rascally
  ,
  • more scoundrelly
  ,
  • more sophistical
  ,
  • most apostate
  ,
  • most casuistic
  ,
  • most concocted
  ,
  • most cooked up
  ,
  • most cooked-up
  ,
  • most cookedup
  ,
  • most deluding
  ,
  • most fabricated
  ,
  • most forsworn
  ,
  • most imitation
  ,
  • most misrepresentative
  ,
  • most mythomaniac
  ,
  • most scoundrelly
  ,
  • mythomaniac
  ,
  • off mark
  ,
  • off the mark
  ,
  • pre-tended
  ,
  • rascally
  ,
  • scoundrelly
  ,
  • so called
  ,
  • socalled
  ,
  • sophistical
  ,
  • un founded
  ,
  • un-founded
  ,
  • un-real
  .
  • faulty
  • de based
  ,
  • de-based
  ,
  • flawed
  ,
  • imprecise
  ,
  • in adequate
  ,
  • in complete
  ,
  • in-adequate
  ,
  • in-complete
  ,
  • in-sufficient
  ,
  • malfunctioning
  ,
  • more blemished
  ,
  • more malfunctioning
  ,
  • more marred
  ,
  • more unretentive
  ,
  • more warped
  ,
  • most blemished
  ,
  • most botched
  ,
  • most imprecise
  ,
  • most lemon
  ,
  • most malfunctioning
  ,
  • most marred
  ,
  • most unretentive
  ,
  • most warped
  ,
  • out order
  ,
  • un-fit
  ,
  • un-retentive
  ,
  • unretentive
  .
  • fickle
  • more quicksilver
  ,
  • most quicksilver
  ,
  • most yoyo
  ,
  • quicksilver
  ,
  • temperamental
  .
  • fly-by-night
  • fly by night
  ,
  • here today gone tomorrow
  ,
  • here-today-gone-tomorrow
  ,
  • impermanent
  ,
  • more cowboy
  ,
  • more here today gone tomorrow
  ,
  • more here-today-gone-tomorrow
  ,
  • most cowboy
  ,
  • most here today gone tomorrow
  ,
  • most here-today-gone-tomorrow
  ,
  • not be relied up on
  ,
  • not be relied upon
  ,
  • not be trusted
  ,
  • not to be relied up on
  ,
  • not to be relied upon
  ,
  • not to be trusted
  ,
  • short lived
  ,
  • shortlived
  ,
  • slimier
  ,
  • un professional
  ,
  • un-professional
  .
  • given to sudden behavior change
  • capricious
  .
  • hypocritical
  • feigning
  ,
  • hypo critical
  ,
  • hypo-critical
  ,
  • jivey
  ,
  • jivier
  ,
  • jiviest
  ,
  • left handed
  ,
  • lefthanded
  ,
  • moralistic
  ,
  • more caviling
  ,
  • more dissembling
  ,
  • more feigning
  ,
  • more moralistic
  ,
  • more smooth spoken
  ,
  • more smooth-spoken
  ,
  • more smoothspoken
  ,
  • most caviling
  ,
  • most dissembling
  ,
  • most feigning
  ,
  • most moralistic
  ,
  • most smooth spoken
  ,
  • most smooth-spoken
  ,
  • most smoothspoken
  ,
  • self righteous
  ,
  • selfrighteous
  ,
  • smooth spoken
  ,
  • smooth tongued
  ,
  • smooth-spoken
  ,
  • smoothspoken
  ,
  • smoothtongued
  ,
  • snide
  .
  • hypothetical
  • Conjecturable
  ,
  • Postulated
  ,
  • contestable
  ,
  • hypo thetical
  ,
  • hypo-thetical
  ,
  • hypothetical
  ,
  • more conjecturable
  ,
  • more contestable
  ,
  • more postulated
  ,
  • more presupposed
  ,
  • more pretending
  ,
  • more refutable
  ,
  • more stochastic
  ,
  • more unconfirmed
  ,
  • most conjecturable
  ,
  • most contestable
  ,
  • most postulated
  ,
  • most presupposed
  ,
  • most pretending
  ,
  • most refutable
  ,
  • most stochastic
  ,
  • most unconfirmed
  ,
  • pre supposed
  ,
  • pre tending
  ,
  • pre-supposed
  ,
  • pre-tending
  ,
  • putative
  ,
  • refutable
  ,
  • stochastic
  ,
  • un confirmed
  ,
  • un-confirmed
  ,
  • unconfirmed
  .
  • iffy
  • iffy
  ,
  • in lap gods
  ,
  • in lap of gods
  ,
  • up air
  ,
  • up in air
  ,
  • up the air
  .
  • inaccurate
  • all wet
  ,
  • doesn't wash
  ,
  • doesnt wash
  ,
  • in accurate
  ,
  • in error
  ,
  • more way off
  ,
  • more way-off
  ,
  • more wayoff
  ,
  • most way off
  ,
  • most way-off
  ,
  • most wayoff
  .
  • incorrect
  • in appropriate
  ,
  • in correct
  ,
  • in-appropriate
  ,
  • more unfitting
  ,
  • most unfitting
  ,
  • un fitting
  ,
  • un seemlier
  ,
  • un seemliest
  ,
  • un seemly
  ,
  • un suitable
  ,
  • un-fitting
  ,
  • un-seemlier
  ,
  • un-seemliest
  ,
  • un-suitable
  ,
  • unfitting
  ,
  • way off
  ,
  • wide mark
  ,
  • wide of mark
  ,
  • wide the mark
  ,
  • wrong number
  .
  • insincere
  • dis simulating
  ,
  • dis-simulating
  ,
  • in sincere
  ,
  • in sincerer
  ,
  • in sincerest
  ,
  • in-sincere
  ,
  • in-sincerer
  ,
  • in-sincerest
  ,
  • more dissimulating
  ,
  • more put on
  ,
  • more put-on
  ,
  • most dissimulating
  ,
  • most put on
  ,
  • most puton
  ,
  • puton
  .
  • irregular
  • Designless
  ,
  • de signless
  ,
  • de-signless
  ,
  • dis connected
  ,
  • dis continuous
  ,
  • dis-connected
  ,
  • dis-continuous
  ,
  • in discriminate
  ,
  • in frequent
  ,
  • in-discriminate
  ,
  • in-frequent
  ,
  • more designless
  ,
  • more faltering
  ,
  • more nonuniform
  ,
  • more unmethodical
  ,
  • more weaving
  ,
  • most designless
  ,
  • most faltering
  ,
  • most nonuniform
  ,
  • most unpunctual
  ,
  • most weaving
  ,
  • non uniform
  ,
  • non-uniform
  ,
  • nonuniform
  ,
  • re current
  ,
  • re-current
  ,
  • un considered
  ,
  • un even
  ,
  • un methodical
  ,
  • un systematic
  ,
  • un-considered
  ,
  • un-even
  ,
  • un-methodical
  ,
  • un-systematic
  ,
  • unmethodical
  ,
  • unpunctual
  .
  • irresponsible
  • devil may care
  ,
  • illconsidered
  ,
  • in cautious
  ,
  • in-cautious
  ,
  • more unanswerable
  ,
  • more uncareful
  ,
  • most unanswerable
  ,
  • most uncareful
  ,
  • noaccount
  ,
  • un answerable
  ,
  • un careful
  ,
  • un-accountable
  ,
  • un-answerable
  ,
  • un-careful
  ,
  • uncareful
  ,
  • undependable
  .
  • lying, untruthful
  • dishonest
  .
  • marked by opposite extremes
  • bipolar
  .
  • mercurial
  • bubbleheaded
  ,
  • flipper
  ,
  • flippest
  ,
  • more bubbleheaded
  ,
  • more short fuse
  ,
  • more short-fuse
  ,
  • most bubbleheaded
  ,
  • most short fuse
  ,
  • most short-fuse
  ,
  • most shortfuse
  ,
  • short-fuse
  ,
  • shortfuse
  .
  • not dependable, unfaithful
  • untrustworthy
  .
  • not trustworthy, not true
  • unreliable
  .
  • not well; flimsy
  • unsound
  .
  • not working; incorrect
  • faulty
  .
  • noun
  • Doubtable
  ,
  • apocryphal
  ,
  • baseless
  ,
  • counterfeit
  ,
  • debatable
  ,
  • disputable
  ,
  • disputed
  ,
  • dodgy
  ,
  • doubtful
  ,
  • exploded
  ,
  • fabulous
  ,
  • fictitious
  ,
  • fishy
  ,
  • hazardous
  ,
  • lying
  ,
  • mendacious
  ,
  • problematic
  ,
  • questionable
  ,
  • risky
  ,
  • shady
  ,
  • shaky
  ,
  • spurious
  ,
  • suspect
  ,
  • unauthorized
  ,
  • untried
  .
  • precarious
  • hanging by thread
  ,
  • in secure
  ,
  • in securer
  ,
  • in securest
  ,
  • in-secure
  ,
  • in-securer
  ,
  • in-securest
  ,
  • more dynamite
  ,
  • more impugnable
  ,
  • most impugnable
  ,
  • on thin ice
  ,
  • out a limb
  ,
  • out limb
  ,
  • out on limb
  ,
  • pre carious
  ,
  • pre-carious
  ,
  • un healthier
  ,
  • un healthiest
  ,
  • un healthy
  ,
  • un-healthiest
  ,
  • un-healthy
  .
  • shady
  • dis graceful
  ,
  • dis-graceful
  ,
  • in famous
  ,
  • in glorious
  ,
  • in-glorious
  ,
  • more unrespectable
  ,
  • most unrespectable
  ,
  • un ethical
  ,
  • un respectable
  ,
  • un-ethical
  ,
  • un-respectable
  ,
  • unrespectable
  .
  • slippery
  • glace
  ,
  • like skating rink
  ,
  • more glace
  ,
  • most glace
  .
  • smooth, slick
  • slippery
  .
  • temperamental
  • easily upset
  ,
  • ex citable
  ,
  • ex plosive
  ,
  • ex-citable
  ,
  • ex-plosive
  ,
  • head-strong
  ,
  • hyper-sensitive
  ,
  • hypersensitive
  ,
  • in bad mood
  ,
  • more cussed
  ,
  • more hyper
  ,
  • more hypersensitive
  ,
  • most cussed
  ,
  • most hypersensitive
  ,
  • thin skinned
  ,
  • thinskinned
  .
  • treacherous
  • false hearted
  ,
  • more betraying
  ,
  • more dissembled
  ,
  • most dissembled
  ,
  • snake grass
  ,
  • snake in grass
  ,
  • snake the grass
  .
  • tricky, doubtful
  • precarious
  .
  • trustworthy
  • bad
  ,
  • broken
  ,
  • corrupt
  ,
  • evil
  ,
  • false
  ,
  • fraudulent
  ,
  • inadequate
  ,
  • indefinite
  ,
  • intermittent
  ,
  • soft
  ,
  • unfixed
  ,
  • unreal
  ,
  • unsuitable
  ,
  • unsure
  ,
  • vulnerable
  ,
  • weak
  ,
  • wobbly
  .
  • uncertain
  • in distinct
  ,
  • in-distinct
  ,
  • more unfixed
  ,
  • most unfixed
  ,
  • un fixed
  ,
  • un foreseeable
  ,
  • un resolved
  ,
  • un-determined
  ,
  • un-fixed
  ,
  • un-foreseeable
  ,
  • up for grabs
  .
  • undependable
  • no bargain
  ,
  • no good
  ,
  • nogood
  ,
  • tricker
  ,
  • trickest
  ,
  • un dependable
  ,
  • un-dependable
  .
  • unpredictable
  • from left field
  ,
  • un predictable
  ,
  • un-predictable
  .
  • unpredictable; wandering
  • erratic
  .
  • unreliable and shady
  • fly-by-night
  .
  • unsafe
  • on a limb
  ,
  • on limb
  ,
  • un safe
  ,
  • un safer
  ,
  • un safest
  ,
  • un-safe
  ,
  • un-safer
  ,
  • un-safest
  .
  • unsound
  • de ranged
  ,
  • de-ranged
  ,
  • dis eased
  ,
  • dis-eased
  ,
  • in congruous
  ,
  • in firm
  ,
  • in firmer
  ,
  • in firmest
  ,
  • in poor health
  ,
  • in sane
  ,
  • in saner
  ,
  • in sanest
  ,
  • in substantial
  ,
  • in-congruous
  ,
  • in-firmer
  ,
  • in-firmest
  ,
  • in-sane
  ,
  • in-saner
  ,
  • in-substantial
  ,
  • more unbacked
  ,
  • most unbacked
  ,
  • un backed
  ,
  • un hinged
  ,
  • un sound
  ,
  • un sounder
  ,
  • un substantial
  ,
  • un-backed
  ,
  • un-balanced
  ,
  • un-hinged
  ,
  • un-sound
  ,
  • un-sounder
  ,
  • un-soundest
  ,
  • un-substantial
  ,
  • unbacked
  .
  • unstable
  • more teetering
  ,
  • most teetering
  ,
  • not fixed
  ,
  • un stable
  ,
  • un stabler
  ,
  • un stablest
  ,
  • un-stable
  ,
  • un-stabler
  ,
  • un-stablest
  ,
  • wiggliest
  ,
  • wiggly
  .
  • untrustworthy
  • fair-weather
  ,
  • fairweather
  ,
  • finker
  ,
  • finkest
  ,
  • more conniving
  ,
  • more fair weather
  ,
  • more fair-weather
  ,
  • more fairweather
  ,
  • most conniving
  ,
  • most fair weather
  ,
  • most fair-weather
  ,
  • most fairweather
  ,
  • un trustworthy
  ,
  • un-trustworthy
  .
  • untruthful
  • un-truthful
  .
  • vacillating, blowing hot and cold
  • fickle
  .
  • whimsical, chance
  • arbitrary
  .
  • wrong
  • incorrect
  .

• Other relevant words:

• unanswerable
.
• Other relevant words (noun):
• incertain
.

Usage examples for Reliable

Famous quotes with Reliable

• If the Old Testament were a reliable guide in the matter of capital punishment, half the people in the United States would have to be killed tomorrow.

  Steve Allen
• Promises are the uniquely human way of ordering the future, making it predictable and reliable to the extent that this is humanly possible.

  Hannah Arendt
• The one thing that I know government is good for is countervailing against monopoly. It's not great at that either, but it's the only force I know that is fairly reliable.

  John Perry Barlow
• As a personal beneficiary of the service that Amtrak provides and as someone who represents a congressional district that counts on safe, reliable rail service, I am a strong supporter of providing this vital industry the funding necessary to continue operations.

  Tim Bishop
• I find it odd that there's such strong objection to what is a clear way to assure that our elections are reliable and we can do a recount if there are any questions.

  Joan Blades

Related words & questions

Related words: food delivery services, best food delivery service, food delivery order, food delivery near me, best food delivery, fast food delivery, food ordering app

Related questions:

What is the best food delivery service?

Where can you find the cheapest food delivery service?

What is a good food delivery service?

How much does a good food delivery service cost?

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