1offensively impolite or bad-mannered:she had been rude to her boss he is a rude and arrogant bully
2referring to a taboo subject such as sex in a way considered embarrassing or offensive:Graham giggled at every rude joke
3 [attributive] having a startling abruptness:the war came as a very rude awakening
4 [attributive] chiefly
British vigorous or hearty:Isabel had always been in rude health
5 dated roughly made or done; lacking sophistication:a rude coffin archaic ignorant and uneducated:the new religion was first promulgated by rude men