GRE TOEFL IELTS commence Definition To begin or start an action or process. Example "The ceremony will commence at precisely noon." Sign in to save GRE PDF — $25 TOEFL PDF — $25 IELTS PDF — $25 ← commemorate commencement → Stories featuring "commence" Salmon Dreams and Borrowed Time Study tips featuring "commence" TOEFL Academic Vocabulary: Study by Topic Boost Your IELTS Writing With Precise Vocabulary Related words GRE awe GRE smithereens GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct GRE aberrant