Definitions

1. noun

A large, intelligent primate of the Old World monkey family, Cercopithecidae, found in the forests of Africa.

“The mandril was known for its distinctive face markings and loud calls.”

2. noun

A person who behaves in a manner that is considered foolish or annoying, especially in a way that is perceived as childish.

“He was acting like a mandril, refusing to listen to anyone’s advice.”