cardsharper means synonym of cardsharp. Lexicurio rates it Sui generis — a strength score of 86 out of 100.
Why “cardsharper” is a great word
CARDSHARPER — [Noun] A professional cheat at card games, practiced in the surreptitious mechanics of fraud. From card (playing card) + sharper (a swindler, a cheat). Unlike a "cardsharp" (a mere variant) or a "spieler" (whose trade is glib talk and broader hustles), the cardsharper is an artisan of silent, technical precision. It is the phantom ace slipped from a sleeve, the imperceptible crimp on a king, and the practiced flick that deals from the bottom—a vocation built on the quiet, systematic betrayal of chance itself.
Etymology
From card + sharper.
noun
- Synonym of cardsharp.“I had never defrauded a man of a farthing, nor called him knave behind his back. But now the last rag that covered my nakedness had been torn from me. I was branded a blackleg, card-sharper, and murderer.”