crass
adjective /kræs/
  /kræs/
- 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.
 
Oxford Collocations DictionaryCrass is used with these nouns:- insensitivity
 - stupidity
 
Word Originlate 15th cent. (in the sense ‘dense or coarse’): from Latin crassus ‘solid, thick’.