Wasted effort is the result of putting in time, resources, and energy on something that didn't produce the desired outcome. It may be frustrating and demotivating to put in effort only to see the results turn out to be fruitless. Some synonyms that describe this phenomenon include failed attempt, unproductive labor, wasted energy, and pointless exertion. Other expressions that can be used in place of wasted effort are futile endeavor, lost cause, and barren labor. It's important to identify when effort has become wasted and redirect resources to more productive activities. When effort is directed towards the right goals, success becomes achievable.