overweeninga GRE synonym for 'presumptuous' meaning showing excessive confidence or bold self-regardHis overweening ambition blinded him to the risks that eventually ruined his career.NoteHis overweening ambition blinded him to the risks that eventually ruined his career.Elon.io is an online learning platformWe have an entire course teaching GRE Verbal — Essential Vocabulary grammar and vocabulary.Start learning GRE Verbal — Essential Vocabulary now