Thesaurus.com
Dictionary.com

be effective

VERB
work out
Synonyms
STRONGEST
accomplish achieve arrange come out complete develop devise figure out fix form formulate handle happen resolve win
WEAK
attain bring off clear come to terms compromise construct contrive elaborate evolve find out finish get something done go go well manipulate pan out plan prosper pull off put together reach agreement result succeed swing turn out up
Antonyms
STRONGEST
break destroy disarrange disorganize disturb fail forget give up halt ignore lose neglect stop

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Other rescue strategies, like moving the animals elsewhere or fencing them off from predators, are unfeasible or unlikely to be effective at saving the caribou.

From Slate • Apr. 28, 2026

Despite the company’s new practice, geofence warrants can still be effective for police to gather location information from other tech companies that store it in the cloud.

From The Wall Street Journal • Apr. 26, 2026

On average, the test can determine which antibiotic will be effective in about 5.85 hours.

From Science Daily • Mar. 31, 2026

They can be effective at either end of the pitch.

From BBC • Mar. 27, 2026

“Most classes are out at three, but it’s not gonna be effective if we wait until after that.”

From "Anger Is a Gift" by Mark Oshiro