Definition of truculent adjective from the Oxford Advanced Learner's Dictionary

 

truculent

 adjective
adjective
BrE BrE//ˈtrʌkjələnt//
 
; NAmE NAmE//ˈtrʌkjələnt//
 
(formal, disapproving) Anger
 
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tending to argue or be bad-tempered; slightly aggressive ‘What do you want?’ he asked, sounding slightly truculent. See related entries: Anger Word Origin mid 16th cent.: from Latin truculentus, from trux, truc- ‘fierce’.
See the Oxford Advanced American Dictionary entry: truculent