What is another word for "back"?

Roget's Thesaurus (1911) lists these synonyms for "back": aback, abaft, abandon, abandonment, abditory, abjure, able, abrogation, abstain, abstinence, accubation, accumbent, accusation, action, adytum, aft, after, again, against, aid, aitchbone, all, alluvial, alone, altogether, ambuscade, ambush, amnesia, amnesty, and, another, antagonist, area, argument, arm, aside, astern, atonement, attention, avast.