boorish

/ˈbʊrɪʃ/
adjective
  1. Rude, insensitive, and lacking good manners or social grace.
    • She found his boorish habit of interrupting people very annoying.
    • The boorish behavior of the fans ruined the concert for everyone.
    • His boorish comments at the meeting offended several coworkers.
Synonyms