monkey

nouns

any of various long-tailed primates (excluding the prosimians)

monkey

is a type of (narrower)

any placental mammal of the order Primates; has good eyesight and flexible hands and feet

one who is playfully mischievous

imp, monkey, rapscallion, rascal, scalawag, scallywag, scamp

play around with or alter or falsify, usually secretively or dishonestly

"Someone tampered with the documents on my desk"; "The reporter fiddle with the facts"

fiddle, monkey, tamper

do random, unplanned work or activities or spend time idly

"The old lady is usually mucking about in her little house"