Summary: The Latin root word *sid* and its variant *sed* both mean "sit." These roots are the word origin of many English vocabulary words, including [*sed*]ative, [*sed*]iment, pre[*sid*]ent, and re[*sid*]e. For instance, a re[*sid*]ence is a place where its re[*sid*]ents are able to "sit" back; a [*sed*]entary person likes to "sit" around a lot instead of being active.
