1. brusque, brusk, curt, short(predicate), discourteous (vs. courteous)

usage: marked by rude or peremptory shortness; "try to cultivate a less brusque manner"; "a curt reply"; "the salesgirl was very short with him"

2. crisp, curt, laconic, terse, concise (vs. prolix)

usage: brief and to the point; effectively cut short; "a crisp retort"; "a response so curt as to be almost rude"; "the laconic reply; `yes'"; "short and terse and easy to understand"

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See also: curt (Dictionary)