What is another word for "background"?

Roget's Thesaurus (1911) lists these synonyms for "background": aback, abaft, abditory, adytum, aft, after, aitchbone, ambuscade, ambush, and, astern, back, backside, backwards, bashful, bashfulness, beat, behind, bend, blend, blind, blinker, blush, blushing, bone, breech, bring, bushel, buttock, candle, cast, caudal, ceremony, chine, cloak, closet, cloud, coin, concealed, concealment.