67 synonyms for abrupt such as dizzy, breakneck, bluff, broken, acute, and bluff. Abrupt is an adjective, and its antonyms are gradual and unhurried.
Breakneck, hasty, headlong, hurried, immediate, instantaneous, meteoric, precipitate, quick, rapid, speedy, startling, sudden, surprising, swift, unanticipated, unexpected, unforeseen, violent, and without warning.
Bluff, blunt, brisk, brusque, cavalier, churlish, crisp, curt, discourteous, gruff, harsh, laconic, no-nonsense, off, offhand, rough, rude, sharp, short, snappish, snappy, surly, terse, to the point, unceremonious, and uncivil.
Broken, disconnected, discontinuous, inelegant, irregular, jerky, rough, and uneven.
Acute, bluff, declivitous, dizzy, perpendicular, precipitous, sharp, sheer, steep, sudden, vertical, and vertiginous.