knuck·le·head

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.

knucklehead

ˈknuckleˌheaded adj

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

knuck•le•head

n. Informal.

a stupid, bumbling, inept person.

[1940–45]

knuck′le•head`ed, adj.

Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

Noun

1.

knucklehead - a stupid person; these words are used to express a low opinion of someone's intelligence blockhead, bonehead, dumbass, dunce, dunderhead, fuckhead, hammerhead, loggerhead, lunkhead, muttonhead, numskull, shithead

Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005