to scoff is a form of:

Scoff



noun
1.
(An expression of scorn or derision; jeer, an object of derision) ការចំអកបញ្ឈឺចិត្ដ, ចំអក
Example: When Columbus said the earth was round, people scoffed at him.
verbpast tense: scoffed ; past participle: scoffed ; present participle: scoffing ;
1.
(TRANSITIVE) ~ (at somebody / something) (to mock or jeer [at]) ចំអក, មើលងាយ
ENGLISH MEANING
noun
1.
Derision; ridicule; mockery; derisive or mocking expression of scorn, contempt, or reproach.
2.
An object of scorn, mockery, or derision.
verbpast tense: scoffed ; past participle: scoffed ; present participle: scoffing ;
1.
To show insolent ridicule or mockery; to manifest contempt by derisive acts or language; -- often with at.
2.
(TRANSITIVE) To treat or address with derision; to assail scornfully; to mock at.