Synonyms for something:
somebody, doodah, who, Anyone, doohickey, each other, whatsisname, Whosoever, thingy, Whomsoever, Whom, What, whomever, aught, Anybody, one another, doodad, whatsername, Whoever, Thee, someone, whatchamacallit.
Other synonyms and related words:
doodad, thingy, whatsername, aught, somebody, entity, existence, widget, fairly, rather, who, moderately, whomever, Anything, someone, somewhat, X, individuality, What, sort of, so-and-so, reality, Whoever, relatively, Thee, kind of, existent, commodity, Anybody, Anyone, It, article, being.
Sense 1 (noun)
Sense 2 (noun)
Sense 3 (noun)