acerbic UK /əˈsɜː(ɹ)bɪk/US /əˈsərbɪk/ adjective2 •Tasting sour or bitter.Those consumers who object to the acerbic taste of garlic can purchase de-odorized garlic or allicin extract. — 1998 •(figurative) Sharp, harsh, biting.Supercompetent, superconfident and supercritical, Schmidt is a gifted orator whose acerbic wit earned him the nickname "Schmidt the Lip." — 1986 formsmore acerbic · most acerbic