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Noun: jackanapes  'ja-ku,neyps
Usage: archaic
  1. Someone who is unimportant but cheeky and presumptuous
    "The experienced manager was irritated by the young jackanapes's overconfidence";
    - whippersnapper [informal]

Derived forms: jackanapeses

See also: lightweight

Type of: cipher, cypher, nobody, nonentity

Encyclopedia: Jackanapes