Pronunciation: /ˈnʌkəlˌhɛdɪd/
adjective describing someone who is foolish or stupid
A1 He made a knuckleheaded mistake by forgetting his keys at home.
A2 The knuckleheaded decision to skip class ended up causing more problems.
B1 Her knuckleheaded behavior at work led to her being reprimanded by her boss.
B2 The knuckleheaded plan to sneak into the concert without tickets was quickly thwarted by security.
C1 Despite his intelligence, he sometimes made knuckleheaded choices that left others scratching their heads.
C2 The CEO's knuckleheaded decision to invest in a failing company cost the company millions in losses.
formal The knuckleheaded decision to cut funding for education will have long-term negative consequences.
informal I can't believe you made such a knuckleheaded mistake on the project.
slang Stop being so knuckleheaded and listen to what I'm saying.
figurative His stubborn and knuckleheaded attitude is preventing any progress in the negotiations.
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