/ˈdʒækəˌneɪps/
NOUN
A person, especially a child or young person, who behaves in an impertinent, cheeky, or mischievous way; a presumptuous or troublesome individual.
A playful, troublesome, or disobedient person, particularly a child who frequently gets into mischief or causes trouble.
Someone who behaves disrespectfully, presumptuously, or with excessive self-confidence, especially toward people deserving of respect or authority.
NOUN
A monkey or ape; an animal historically associated with the word jackanapes.
An animal belonging to the primate group, particularly a monkey, in the historical or less common literal sense of the word.