a ‧ brupt /əˈbrʌpt/ BrE AmE adjective
[ Date: 1500-1600 ; Language: Latin ; Origin: past participle of abrumpere , from ab- 'away, off' + rumpere 'to break' ]
1 . sudden and unexpected:
an abrupt change of plan
come to an abrupt end/halt etc
The bus came to an abrupt halt.
2 . seeming rude and unfriendly, especially because you do not waste time in friendly conversation:
Sorry, I didn’t mean to be so abrupt.
—abruptly adverb
—abruptness noun [uncountable]