effect, v. effectuate, [accomplish], [realize], [achieve], [consummate], [compass].
effective, a. [effectual], [efficient], [potent], [cogent], availing, productive.
effectual, a. [efficacious], [effective], [efficient], availing, [successful]. Antonym: ineffectual.
effeminate, a. [womanish], [unmanly], cockney.--n. cockney.
effervescence, n. ebullition. Antonyms: ineffervescence, defervescence.
effete, a. [exhausted], infecund, [unfruitful], wasted, [barren].
efficacious, a. [potent], [effectual], [effective], productive. Antonym: inefficacious.
efficacy, n. potency, effectiveness, efficiency, productiveness. Antonyms: inefficacy, impotency.
efficient, a. [competent], [capable], [proficient], [effectual], [potent], [efficacious].
effort, n. attempt, endeavor, [trial], [essay], [venture], [exertion], [strain], [struggle].