"laugh at in contempt, mock, ridicule, scorn by laughter," 1520s, from Middle French derider, from Latin deridere "to ridicule, laugh to scorn," from de "down" (see de-) + ridere "to laugh" (see risible). Related: Derided; deriding.
He derided his student's attempt to solve the biggest problem in mathematics
derecho
deregister
deregulate
derelict
dereliction
deride
derision
derisive
derisory
derivate
derivation
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