rude
Pronunciation: /ruːd/
adjective
- 1offensively impolite or bad-mannered: she had been rude to her boss he is a rude and arrogant bully

Origin:
Middle English (in rude (sense 5), also 'uncultured'): from Old French, from Latin rudis 'unwrought' (referring to handicraft), figuratively 'uncultivated'; related to rudus 'broken stone'