belonging to an early stage of technical development; characterized by simplicity and (often) crudeness; "the crude weapons and rude agricultural implements of early man"; "primitive movies of the 1890s"; "primitive living conditions in the Appalachian mountains"
{s} crude, discourteous, impolite; primitive, simple, unsophisticated; harsh, severe
Violent; tumultuous; boisterous; inclement; harsh; severe; said of the weather, of storms, and the like; as, the rude winter
Characterized by roughness; umpolished; raw; lacking delicacy or refinement; coarse
If someone receives a rude shock, something unpleasant happens unexpectedly. It will come as a rude shock when their salary or income-tax refund cannot be cashed. + rudely rude·ly People were awakened rudely by a siren just outside their window
Rude is used to describe words and behaviour that are likely to embarrass or offend people, because they relate to sex or to body functions. Fred keeps cracking rude jokes with the guests = obscene
When people are rude, they act in an impolite way towards other people or say impolite things about them. He's rude to her friends and obsessively jealous polite + rudely rude·ly I could not understand why she felt compelled to behave so rudely to a friend. + rudeness rude·ness She was angry at Steve's rudeness, but I could forgive it