Pronunciation: (stul'tu-fī"),[key] —v.t.,-fied, -fy•ing. 1. to make, or cause to appear, foolish or ridiculous.
2. to render absurdly or wholly futile or ineffectual, esp. by degrading or frustrating means: Menial work can stultify the mind. 3. Law.to allege or prove (oneself or another) to be of unsound mind.