deride (verb) - to mock, scoff at or speak of contemptuously [dih-rahyd]
BREAKDOWN: DE- (down) + RID- (laugh)
derision is scoffing, mockery, or ridicule
derisive means showing contempt through scorn or ridicule; ridiculous or inviting derision
See also: risible
“There's no disgrace in failing, lad, Though friends and foes deride;
In fact, a failure's not so bad As never having tried.” —Ken Kesey