flexitarian UK /flɛk.sɪˈtɛə.ɹi.ən/US /flɛk.sɪˈtɛ.ɹi.ən/adjective 2noun 1forms 3 adjective2 •Being a flexitarian. •Being what a flexitarian might eat. noun1 •One who is usually or primarily vegetarian, but not strictly so. formsflexitarians · more flexitarian · most flexitarian