Brusque, curt (5)
I believe the answer is:
short
This clue is a double definition.
'brusque' is the first definition.
(I know that brusque can be written as short)
'curt' is the second definition.
(I know that curt can be written as short)
(Other definitions for short that I've seen before include "Cause to blow a fuse" , "Of small duration" , "Neat" , "Concise" , "Of small length" .)