rancorousa GRE synonym for 'bitter' meaning feeling or showing deep ill will; intensely antagonisticThe rancorous dispute between the heirs dragged on for years in probate court.NoteThe rancorous dispute between the heirs dragged on for years in probate court.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