Definition of dickhead in English:

dickhead

noun

vulgar slang
  • A stupid, irritating, or ridiculous man.

    idiot, ass, halfwit, nincompoop, blockhead, buffoon, dunce, dolt, ignoramus, cretin, imbecile, dullard, moron, simpleton, clod
    View synonyms

Origin

1960s: from dick + head.

Pronunciation:

dickhead

/ˈdɪkhɛd/