"Discumbency" is an uncommon word that refers to the act of reclining or lying down. There are numerous synonyms for this word that can be used interchangeably depending on the context. Some of these synonyms include "recumbency," "supine position," "lying," "reclining," "resting," and "prone position." These words can be used to describe various activities such as sleeping, lounging, relaxing, or even recovering from an injury. It is important to note that using synonyms can add variety to one's speech or writing, making it more interesting and impactful. By utilizing different words to convey the same meaning, one can avoid repetitive language and keep the audience engaged.