The art, practice, or skill of conducting oneself with the manners, character, and conduct expected of a gentleman.
From 'gentleman' + '-ship' (skill, practice, state of), creating a noun that describes gentlemanly conduct as a learnable craft or art form.
The word 'gentlemanship' (like 'sportsmanship' or 'craftsmanship') treats being a gentleman as a *skill* you develop through practice, which is both empowering and cynical—it suggests refinement is performance.
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