Found 2 items, similar to nincompoop.
English → English (WordNet) Definition: nincompoop nincompoop n : a stupid foolish person [syn: poop, ninny]
English → English (gcide) Definition: nincompoop nincompoop \nin"com*poop\, n. [A corruption of non compos.] A fool; a silly or stupid person. [Law] [1913 Webster] An old ninnyhammer, a dotard, a nincompoop, is the best language she can afford me. --Addison. [1913 Webster]