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

 

crass

 adjective
adjective
BrE BrE//kræs//
 
; NAmE NAmE//kræs//
 
Stupid
 
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very stupid and showing no sympathy or understanding synonym insensitive the crass questions all disabled people get asked an act of crass (= great) stupidity I thought his comments were somewhat crass. See related entries: Stupid Word Origin late 15th cent. (in the sense ‘dense or coarse’): from Latin crassus ‘solid, thick’.
See the Oxford Advanced American Dictionary entry: crass