KNUCKLEHEADED Synonyms: 161 Similar and Opposite Words

knuckleheaded

adjective

as in dumb

not having or showing an ability to absorb ideas readily a knuckleheaded attempt to increase efficiency that only succeeded in making things worse

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Recent Examples of Synonyms for knuckleheaded

Adjective

What used to be a forum for original, quirky, clever remarks by the Daily News’ varied community of smartypants has turned into a gridlock of repetitious venting of old, dumb blah.

— Voice of the People, New York Daily News, 10 July 2026
How to make an iPhone a 'dumb phone' To simplify an iPhone, users should engage Assistive Access, an iOS feature intended for users with cognitive disabilities.

— Greta Cross, USA Today, 7 July 2026

Definition of dumb

Adjective

Even when Romanzy goes off on how stupid and ugly Caleb is — and gossips that his parents abandoned him because something must be wrong with him — Mary goes along with it.

— Maggie Fremont, Vulture, 11 July 2026
Shockingly, the letter seems to be pushing for a return to standardized tests by, in effect, arguing that a growing percentage of their students are simply too stupid to succeed, no matter what professors do.

— Los Angeles Times, Los Angeles Times, 8 July 2026

Definition of stupid

Adjective

Still, as the game wore on to the waning moments, both teams were visibly sapped of energy and moving at a slower pace, including Haaland, who faded late in the game, was subbed out at the 105-minute mark and replaced by Jorgen Strand Larsen.

— Michelle Kaufman, Miami Herald, 12 July 2026
The question is whether the stock price leaves enough room if that recovery is slower, messier, or pricier than hoped.

— Jim Osman, Forbes.com, 11 July 2026

Definition of slow

Adjective

And that’s a lot of energy to shed as a vehicle comes blaring back into Earth’s thick atmosphere, a process that typically annihilates objects returning from space unless they are precisely designed to survive the trip.

— Jackie Wattles, CNN Money, 16 July 2026
The water drew back from the house, left a thick, stinking silt across the floor.

— Literary Hub, Literary Hub, 16 July 2026

Definition of thick

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knucklehead

knuckleheaded

knuckleheads

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“Knuckleheaded.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/knuckleheaded. Accessed 17 Jul. 2026.

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Synonyms of knuckleheaded

adjective

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