He derided his student's attempt to solve the biggest problem in mathematics.
Examples of deride
deride
All deride the old regime but few manifestos spell out what they would do instead.
From the economist.com
They tend to deride California as some sort of socialistic Sodom and Gomorrah.
From the guardian.co.uk
Deride Channel 5 all you want, but Sky News still have to produce their bulletins.
From the guardian.co.uk
Despise and deride it all you like, but the business card remains a growth market.
From the businessweek.com
I think I know why so many fans and some in the industry deride Buck's style.
From the freep.com
We would have been no different to the, for example, French who we so often deride.
From the guardian.co.uk
Critics deride this as fluff, but I think it is crucial in medical education.
From the well.blogs.nytimes.com
And the Democrats have the hypocrisy to deride the lack of specificity from Romney?
From the economist.com
Abdelkhader, all countries have their problems and it is easy to deride them.
From the economist.com
More examples
Treat or speak of with contempt; "He derided his student's attempt to solve the biggest problem in mathematics"
(derision) contemptuous laughter
(derision) the act of deriding or treating with contempt
Pejoratives (or terms of abuse) are words or grammatical forms which denote a negative affect; that is, they express the contempt or distaste of the speaker. Sometimes a term may begin as a pejorative word and eventually be adopted in a non-pejorative sense. ...
To harshly mock; ridicule
(derision) the use of ridicule or scorn to show contempt
(Derision) non-traditional praise
(derision) To deride someone is to make fun of that person. The sound of voices of derision would be the sound of people making fun of, or laughing at, another.
Derision is a noun and it means a deep form of mockery and ridicule. A very deep one mind it! When you just simper at someone it is not derision. Derision is extreme form of humiliation. ...