Pronunciation: (pri-vāl'),[key] —v.i. 1. to be widespread or current; exist everywhere or generally: Silence prevailed along the funeral route. 2. to appear or occur as the more important or frequent feature or element; predominate: Green tints prevail in the upholstery. 3. to be or prove superior in strength, power, or influence (usually fol. by over): They prevailed over their enemies in the battle. 4. to succeed; become dominant; win out: to wish that the right side might prevail. 5. to use persuasion or inducement successfully: He prevailed upon us to accompany him.