Sharp bar put off (6)
I believe the answer is:
abrupt
'sharp' is the definition.
(synonyms)
'bar put off' is the wordplay.
'off' indicates anagramming the letters.
'bar'+'put'='barput'
'barput' anagrammed gives 'ABRUPT'.
(Other definitions for abrupt that I've seen before include "Short and brusque" , "Short and rude" , "Unexpected - terse" , "Hurried or curt" , "Curt; precipitous" .)