The term "sit hands" is often used in the context of poker playing to describe the hands that a player chooses not to play or fold. There are several synonyms for "sit hands," including "folded hands," "unused hands," "mucked hands," and "discarded hands." These terms all refer to the same thing, that being a hand that a player has chosen not to play. Essentially, when players sit hands, they are giving up on that particular hand and deciding to wait for a better one to come along. It's an essential strategy in poker and can often be the difference between winning and losing.