SAT GRE TOEFL indispensable Definition Absolutely necessary; essential. Example "Coffee is indispensable to her morning routine." Sign in to save SAT PDF — $25 GRE PDF — $25 TOEFL PDF — $25 ← indiscrimination indisposed → Study tips featuring "indispensable" 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