SAT GRE TOEFL effectual Definition Adequate to accomplish a purpose; successful. Example "The manager took effectual steps to resolve the conflict." Sign in to save SAT PDF — $25 GRE PDF — $25 TOEFL PDF — $25 ← effectiveness effeminate → Study tips featuring "effectual" TOEFL Academic Vocabulary: Study by Topic How Context Clues Save You on the SAT Related words SAT antonym SAT abase SAT abdicate SAT abdomen SAT abduction SAT abet SAT abeyance SAT abject SAT abjure SAT ablution SAT abnegate SAT abnormal