Ax to grind
Meaning: a hidden reason for wanting something or for not liking someone or something, to have a selfish reason or strong opinion that influences your actions
Example: The study should be conducted by a firm that has no axe to grind. Don’t listen to Claudia when she tells you how bad that teacher is. She has had an ax to grind since he failed her last year.
Example: The study should be conducted by a firm that has no axe to grind. Don’t listen to Claudia when she tells you how bad that teacher is. She has had an ax to grind since he failed her last year.