square-shouldered

[skwair-shohl-derd]

adjective

having the shoulders held back, giving a straight form to the upper part of the back.

Origin of square-shouldered

First recorded in 1815–25

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

The Germans are a big, square-shouldered, deep-chested race.
Diary of a Pilgrimage
Jerome K. Jerome
Makes you look broader-chested and square-shouldered—more of the man.
The Queen's Scarlet
George Manville Fenn
One square-shouldered fellow raised her lightly from the ground.
Vittoria, Complete
George Meredith
Apart, square-shouldered and indomitable, stood a young man of twenty-six.
The Crossing
Winston Churchill
He was a typical American, tall, square-shouldered, and not over-burdened with flesh.
A Gamble with Life
Silas K. Hocking