1. without refinement, delicacy, or sensitivity; gross; obtuse; stupid: crass commercialism; a crass misrepresentation of the facts.
2. Archaic. thick; coarse.
"people can be crass with classes."
"stupidities can be crass."
"people can be crass."
"materialisms can be crass."
"insensitivities can be crass."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.