What is another word for "party"?

Roget's Thesaurus (1911) lists these synonyms for "party": account, accountable, accountant, acquit, acrobat, actuary, adversary, adverse, and, antagonist, anthropogeny, anthropography, anthropoid, anthropology, anthroposophy, arithmetic, assailant, assets, audit, auditor, bad, balance, bean, being, bel, bete, bias, bigotry, bill, body, bon, book, bookkeeper, bookkeeping, box, brangler, brawler, breach, bring, brother.