Definition of whoreson in US English:

whoreson

noun

archaic
  • An unpleasant or greatly disliked person.

    as modifier ‘you whoreson dog!’
    • ‘The whoreson bastard was here, so close Harnak could smell him, and he snarled and struck his mount with his spurs.’
    • ‘Damned if that whoreson barber hadn't done another terrible job of shaving him that morning.’
    • ‘The Earl of Kent in King Lear insults Oswald: ‘Thou whoreson zed, thou unnecessary letter!’’
    • ‘The whoreson's life is mine to claim and I will use any method at my disposal to be rid of him.’
    • ‘It was time to let Somerset know that his greatest enemy was not yet, as the little whoreson believed, dead.’
    scoundrel, villain, rogue, rascal, brute, animal, weasel, snake, monster, ogre, wretch, devil, good-for-nothing, reprobate, wrongdoer, evil-doer
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Origin

Middle English: from whore + son, suggested by Anglo-Norman French fiz a putain.

Pronunciation

whoreson

/ˈhɔrs(ə)n//ˈhôrs(ə)n/