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 (nĭn′kəm-po͞op′, nĭng′-)
A silly, foolish, or stupid person.

[Origin unknown.]

nin′com·poop′er·y n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


the quality or state of stupidity or idiocy
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
This centuries-old fact renders Thomas Parham's shoptalk defense of his mentor "Joe" White's outmarrying, in response to my criticizing the same, extreme nincompoopery. I recall my head snapping as his statement--"Yeah, but that was his second wife" (his emphasis)--was skull-cracking to me as if that fact were exculpatory.
The lifelong friendships formed in minutes at boot camp; the pranks ("rig jobs") that make regimented military life bearable; the everyday frustrations with what Sanner calls "Navy nincompoopery," and the struggles shared by young sailors and their families, as they cope with separation, loneliness, low pay, even pregnancy and childbirth, while separated by half a planet and the depths of the ocean.
Last night's episode makes this clear in a typically blunt opening, with shots of things smashing, plinky-plonky comedy music and manager Mark reeling off humdinger soundbites like "People don't have to go abroad for their holiday, we will bring abroad to them" and "The global credit crunch wasn't my fault!" If the idea is to showcase some inspired nincompoopery and get punters through the door for entertainment value alone, it deserves to succeed admirably.
The essays cover every facet of the fundamentals of faith through the use of simple logical thought and analysis, thus exposing the relentless nincompoopery of the Christian world view.