poncy UK /ˈpɒnsi/US /ˈpɑnsi/ adjective3 •(informal, offensive) Of, relating to, or characteristic of a ponce. •(informal, disapproving) Intended to impress others, particularly in an excessively refined or ostentatious manner; affected, pretentious.I mean, you could tell he was a Pom all right, but he was trying, he didn't sound so poncy any more, […] — 1988 •(informal, offensive) Chiefly of a male person: effeminate; gay, homosexual.He wore a cream-colored linen suit of a cut and color designed expressly for garden parties, the kind of suit Tom would surely have called "poncy" had he seen it on another man. — 2008 formsponcier · ponciest