What is another word for "upon"?

Roget's Thesaurus (1911) lists these synonyms for "upon": able, about, above, absorbing, abuse, accent, accord, according, account, accusation, act, acting, action, activity, actual, ado, advance, adventure, afore, aforehand, aforementioned, aforesaid, after, afterwards, against, age, agency, agreement, aid, all, alone, already, ambiguity, anagram, and, another, ante, antecedence, antecedent, anterior.