Brusque
Etymology
Borrowed from French brusque, "lively, rough," which came from Italian brusco, "sharp, tart, rough." The Italian word originally named butcher’s broom, a prickly, sharp-leaved shrub. From that image of something bristly and rough, the meaning shifted to a rough, curt manner in dealing with people.
adjective · /BRUSK/
Abrupt and blunt in manner or speech, to the point of seeming rude.
What it names
The clipped, no-time-for-this manner of someone who cuts pleasantries short and leaves you slightly stung.
Example
Her brusque "Not now" made it clear the conversation was over before it had begun.
Related idea
Curt emphasizes rudeness through excessive brevity; brusque adds a rough, hurried sharpness of manner beyond just being short.