A 'wrong number' usually happens when somebody calls a telephone number mistakenly. Synonyms for 'wrong number' include misdialed, erroneous, incorrect, mistaken, or misdial. A misdialed number denotes a person's carelessness or staying in a hurry while dialing. Erroneous pertains to something that is wrong or inaccurate, and a call that is made incorrectly. On the other hand, incorrect denotes something that is not true or accurate in a call. Mistaken is an adjective that describes a person making a wrong judgment or being in error. Lastly, misdial is a type of dialing error, where users enter the wrong number when placing a call.