Dictionary definition · prevail
verb
- be larger in number, quantity, power, status or importance"Money reigns supreme here"
- be valid, applicable, or true"This theory still holds"
- continue to exist"These stories die hard"
- prove superior"The champion prevailed, though it was a hard fight"
- use persuasion successfully"He prevailed upon her to visit his parents"
Source: Open English WordNet (CC BY 4.0).