wrongheaded

US: /ˈrɔŋˈhɛdɪd, ˈrɑŋ-/ ,(rông′hed′id, rong′-)

WordReference Random House Learner's Dictionary of American English © 2026

wrong•head•ed /ˈrɔŋˈhɛdɪd, ˈrɑŋ-/   adj. 

1. misguided;
   stubbornly wrong in judgment or opinion.

wrong•head•ed•ly, adv. 
wrong•head•ed•ness, n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2026

wrong•head•ed  (rông′hed′id, rong′-), adj. 

1. wrong in judgment or opinion;
   misguided and stubborn;
   perverse.

Also, wrong′-head′ed. 

• wrong + headed 1725–35

wrong′head′ed•ly, adv. 
wrong′head′ed•ness, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

wrong-headed adjective

1. constantly wrong in judgment
2. foolishly stubborn; obstinate

ˌwrong-ˈheadedly adverb

ˌwrong-ˈheadedness noun