abrupt

/ə-ˈbrəpt/

borrowed from Latin abruptus "steep, sheer, broken or cut off too short," from past participle of abrumpere "to break, rupture, break off short," from ab- ab-rumpere "to cause to break or burst," going back to Indo-European *ru-n-p-, nasal present formation from the base *reu̯p- "break, tear"

adjective

  1. characterized by or involving action or change without preparation or warning : sudden and unexpected

  2. rudely or unceremoniously curt

  3. lacking smoothness or continuity

came to an abrupt stop

She has an abrupt manner.

precipitate headlong abrupt impetuous sudden mean showing undue haste or unexpectedness. precipitate stresses lack of due deliberation and implies prematureness of action. headlong stresses rashness and lack of forethought.