derisive vs rude

derisive

• Deserving or provoking derision or ridicule. 

• Expressing or characterized by derision; mocking; ridiculing. 

• A derisive remark. 

rude

• Lacking in refinement or civility; bad-mannered; discourteous. 

• Violent; abrupt; turbulent. 

• Somewhat obscene, pornographic, offensive. 

• Undeveloped, unskilled, inelegant. 

• Hearty, vigorous; found particularly in the phrase rude health. 

• Crudely made; primitive. 

• Lacking refinement or skill; untaught; ignorant; raw.