Definition of swarthiness in US English:

swarthiness

noun

  • See swarthy

    • ‘A man, probably in his 70s, he has a swarthiness from what looked like a fading tan; jowlish, with heavy-lidded drooping eyes, a high forehead with a full head of dark brown hair brushed back and a cashmere overcoat casually slung like a cape over his just slightly stooped shoulders.’
    • ‘I smeared my face with Jolen creme bleach, trying to obliterate my swarthiness.’

Pronunciation

swarthiness

/ˈswôrT͟Hēnəs//ˈswɔrðinəs/