Effective typically describes things—such as policies, treatments, arguments, and techniques—that do what they are intended to do. People can also be described as effective when they accomplish what …

The adjective effective has many shades of meaning, but you'll usually see it describing something that's able to produce a desired goal. Effective traces back to the Latin word effectivus, from efficere, …

EFFECTIVE definition: 1. successful or achieving the results that you want: 2. (used about a treatment or drug) working…. Learn more.

Find 118 different ways to say EFFECTIVE, along with antonyms, related words, and example sentences at Thesaurus.com.

Effective and efficient are often confused, but they have slightly different meanings. If you are effective, you do a job properly; if you are efficient, you do it quickly and easily.

Oct 20, 2022 · When you want to say that something you’re doing is causing results, you can say that it’s effective. Specifically, something is effective when it produces the results you want.

Definition of effective adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Aug 8, 2019 · Effective refers to something that achieves its intended result or is successful in producing a desired outcome. It typically implies efficiency and the power to produce effects.

When something such as a law or an agreement becomes effective, it begins officially to apply or be valid. The new rules will become effective in the next few days.

Apr 26, 2026 · Adjective effective (comparative more effective, superlative most effective) Having the power to produce a required effect or effects.