Synonym Dictionary

Having an effect that works against the intended goal.

Ending without the intended result or success.

Successful in producing an intended result.

Capable of producing the intended effect.

Relating to eugenics, the scientifically discredited belief that controlling human reproduction could improve populations.

Highly fertile or productive, including in ideas.

Producing useful results, successful ideas, or abundant growth.

Deliberately contrary to what is expected or reasonable; also contrary in an unexpected way.

The ability or rate of producing useful work, results, or goods.

Producing a large quantity of work or results.

Moving backward or returning to a less developed or less desirable condition.