Marked by sudden changes in subject and sharp transitions:
— Abrupt prose.

synonym: disconnected.

Roget 579: inelegant, graceless, ungraceful; harsh, abrupt; dry, stiff, cramped, formal, guinde [Fr.]; forced, labored; artificial, mannered, ponderous; awkward, uncourtly^†, unpolished; turgid etc. 577; affected, euphuistic^†; barbarous, uncouth, grotesque, rude, crude, halting; offensive to ears polite.    2. Spoken Language ... show more

Exceedingly sudden and unexpected.

Extremely steep:
— An abrupt canyon.

synonyms: precipitous, sharp.

Roget 113: instantaneous, momentary, sudden, immediate, instant, abrupt, discontinuous, precipitous, precipitant, precipitate; subitaneous^†, hasty; quick as thought, quick as lightning, quick as a flash; rapid as electricity.    speedy, quick, fast, fleet, swift, lively, blitz; rapid (velocity) 274.    ... show more

Roget 173: violent, vehement; warm; acute, sharp; rough, rude, ungentle, bluff, boisterous, wild; brusque, abrupt, waspish; impetuous; rampant.    turbulent; disorderly; blustering, raging etc. v.; troublous^†, riotous; tumultuary^†, tumultuous; obstreperous, uproarious; extravagant; unmitigated; ravening, inextinguishable, tameless; frenzied etc. (insane) 503.    desperate etc. (rash) 863; infuriate, furious, outrageous, frantic, hysteric, in hysterics.    fiery, flaming, scorching, hot, red-hot, ebullient.    savage, fierce, ferocious, fierce as a tiger.    excited etc. v.; unquelled^†, unquenched, unextinguished^†, unrepressed, unbridled, unruly; headstrong, ungovernable, unappeasable, immitigable, unmitigable^†; uncontrollable, incontrollable^†; insuppressible, irrepressible; orgastic, orgasmatic, orgasmic.    spasmodic, convulsive, explosive; detonating etc. v.; volcanic, meteoric; stormy etc. (wind) 349.    ... show more

Polish: urwisty

Surprisingly and unceremoniously brusque in manner.