WordWeb Online

1. Any of various long-tailed primates (excluding the prosimians)
    
2. One who is playfully mischievous
   - imp, scamp, rascal, rapscallion, scalawag, scallywag

1. Play around with or alter or falsify, usually secretively or dishonestly
   - tamper, fiddle
    
2. Do random, unplanned work or activities or spend time idly
   - putter, mess around, potter, tinker, monkey around, muck about, muck around

Derived forms: monkeyed, monkeying, monkeys

Type of: child, fry, kid, manipulate, minor, nestling, nipper, primate, shaver, small fry, tiddler [Brit], tike, tyke, wean [UK, Ireland], work, youngster

Encyclopedia: Monkey Monkey, Don't!