A member of a group of primates, falling in the superfamily Cercopithecoidea in the clade Catarrhini.

(idiomatic) Often preceded by well: expressing complete surprise or disbelief.

Any monkey from any of the five families of primates that are found in Central America and South America: the Callitrichidae, the Cebidae, Aotidae, Pitheciidae, and Atelidae.

(figuratively) An addiction, especially to narcotic drugs. / (figuratively) A state of persistent distress or worry or the cause of such a state.

(idiomatic, transitive) To cause a person, group, or action to appear foolish or inferior; to subject someone or something to ridicule.

Callicebus aureipalatii, a New World monkey from Bolivia.

A New World monkey from Bolivia, Callicebus aureipalatii.

A viral disease of humans and primates originating in green monkeys, caused by the Marburgvirus.

(informal) The proposition that a monkey hitting typewriter keys at random is bound to produce meaningful text (such as a work by William Shakespeare), given an infinite amount of time.

plural of monkey-faced owl