Surprisingly brusque (6)
I believe the answer is:
abrupt
(Other definitions for abrupt that I've seen before include "Curt and brief" , "Offhand" , "using minimal language?" , "without warning" , "Sudden, maybe discourteous" .)
I believe the answer is:
abrupt
(Other definitions for abrupt that I've seen before include "Curt and brief" , "Offhand" , "using minimal language?" , "without warning" , "Sudden, maybe discourteous" .)