Definition of fuckwit in US English:

fuckwit

noun

vulgar slang
  • A stupid or contemptible person (often used as a general term of abuse).

    idiot, ass, halfwit, nincompoop, blockhead, buffoon, dunce, dolt, ignoramus, cretin, imbecile, dullard, moron, simpleton, clod
    scoundrel, villain, rogue, rascal, brute, animal, weasel, snake, monster, ogre, wretch, devil, good-for-nothing, reprobate, wrongdoer, evil-doer
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Pronunciation

fuckwit

/ˈfəkwit/