nincompoop

1. (derogatory) A foolish or silly person.Examples: "The Ship of Fools Fully Fraught and Richly Laden with Asses, Fools, Jack-daws, Ninnihammers, Coxcombs, Slender-wits, Shallowbrains, Paper-Skuls, Simpletons, Nickumpoops, Wiseakers, Dunces, and Blockheads. Declaring their several Natures, Manners, and Constitutions; the occasion why this Ship was built, with the places of their intended Voyage, and a lift of the Officers that bear Command therein [book title]."; "Yes, you Nicompoop, you are a pretty Fellow to pleaſe a Woman indeed."; "Mous[trappa]. O you huffing Son of a Whore. / Drink[allup]. You rotten Jack in a box. / Bean[tosser]. You foul mouth'd Nickumpoop."Synonyms: dunderhead, fool, imbecile, nitwit, gaby, hammerhead, putz, alcatotederogatory