SAT GRE plenitude Definition An abundance or large quantity of something. Example "The garden grew in plenitude after the summer rains." Sign in to save SAT PDF — $25 GRE PDF — $25 ← pledge plethora → Study tips featuring "plenitude" 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