Having a habitual stoop in the shoulders and back.
The Century Dictionary (Public Domain)
Use "stoop-shouldered" in a sentence
"This would involve replacement of standard-issue dealers — the stoop-shouldered slobs who dress like parking valets — with seductive looking women in high boots and shiny breastplates, to attract a higher percentage of upscale losers."
"Just then a stoop-shouldered woman in a brightly-colored dress came around the corner, a measuring tape around her shoulders, a thimble on her thumb, and an armful of fleece pullovers draped over her arms."
"The savior of Rembrandt's faith was a young man with a sweet, homely face, heavy-lidded, stoop-shouldered and wan."