abrupt (adj.)

• aggressive
• arduous
• bearish
• beastly
• bluff
• blunt
• blunted
• bold
• brash
• breakneck
• breathless
• brief
• brisk
• brusque
• casual
• cavalier
• churlish
• crisp
• crusty
• curt
• discourteous
• dull
• dulled
• edgeless
• electrifying
• gruff
• harsh
• hasty
• headlong
• hurried
• impetuous
• impolite
• impulsive
• informal
• obtuse
• perpendicular
• plumb
• pointless
• precipitant
• precipitate
• precipitous
• quick
• rapid
• rash
• ready
• rough
• rounded
• rude
• rushing
• severe
• sharp
• sheer
• shocking
• short
• smoothed
• snappish
• snappy
• speedy
• startling
• steep
• sudden
• surly
• surprising
• swift
• truculent
• unannounced
• unanticipated
• unceremonious
• uncivil
• unexpected
• unforeseen
• unlooked-for
• unplanned
• unpointed
• unpredicted
• unsharpened
• vertical