What is another word for "first"?

Roget's Thesaurus (1911) lists these synonyms for "first": about, abstract, ace, acrobat, activity, adage, adept, admirable, admitted, advance, advanced, adventure, aforementioned, aforesaid, ahead, all, alone, and, antecedence, antecedency, antecedent, anteposition, anterior, anteriority, anvil, apart, aphorism, aphoristic, apophthegm, apothegm, apprentice, assumption, atomic, aurora, axiom, axiomatic, azygous, ball, beak, beat.