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The meaning of SUCCESSFUL is resulting or terminating in success. How to use successful in a sentence. SUCCESSFUL definition: 1. achieving the results wanted or hoped for: 2. having achieved a lot, become popular, and/or.. Learn more. Define successful. successful synonyms, successful pronunciation, successful translation, English dictionary definition of successful. adj. 1. Having a favorable outcome: a successful heart transplant. achieving or having achieved success: She had become a very successful businesswoman. resulting in success: a successful attempt to quit smoking. suc•cess•ful•ly, adv.: successfully answered the next. Jan 20, 2026 · successful (comparative more successful, superlative most successful) Resulting in success; assuring or promoting success; accomplishing what was proposed; having the desired effect.

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