THESAURUS
agency, ancestor, ancestors, announcer, antecede, antecedents, antedate, anterior, anticipatory, ascendant, ascendants, avant-garde, base, basis, bellwether, buccinator, bushwhacker, call, causation, cause, cause and effect, chief, ci-devant, determinant, determinative, earlier, early, elder, elders, element, etiology, exordial, explorer, factor, fathers, first, fore, forebear, forebears, forefather, forefathers, foregoer, foregoing, foremost, forerun, forerunner, former, front runner, frontiersman, fugleman, grandfathers, grandparents, ground, groundbreaker, grounds, guide, harbinger, heading, headmost, herald, inaugural, initiatory, innovator, instrumentality, lead runner, leader, leading, means, messenger, occasion, older, pace, past, pathfinder, patriarchs, pioneer, point, precedent, preceding, precessional, precurrent, precursor, precursory, predate, predecessor, predecessors, preexistent, prefatory, preliminary, preludial, prelusive, premise, preparatory, prevenient, previous, prime, primogenitor, principle, prior, proemial, progenitor, progenitors, propaedeutic, prototype, reason, scout, senior, stimulus, stormy petrel, trailblazer, trailbreaker, vanguard, vaunt-courier, voortrekker
ROGET THESAURUS
Precedence
N
precedence, coming before, the lead, le pas, superiority, importance, antecedence, antecedency, anteriority, precursor, priority, precession, anteposition, epacme, preference, preceding, precedent,
antecedent, anterior, prior, before, former, foregoing, beforementioned, abovementioned, aforementioned, aforesaid, said, precursory, precursive, prevenient, preliminary, prefatory, introductory, prelusive, prelusory, proemial, preparatory, before, in advance, seniores priores, prior tempore prior jure.
Precursor
N
precursor,
antecedent, precedent, predecessor, forerunner, vancourier, avant-coureur, pioneer, prodrome, prodromos, prodromus, outrider, leader, bellwether, herald, harbinger, foreboding, dawn, avant-courier, avant-garde, bellmare, forelooper, foreloper, stalking-horse, voorlooper, voortrekker, prelude, preamble, preface, prologue, foreword, avant-propos, protasis, proemium, prolusion, proem, prolepsis, prolegomena, prefix, introduction, heading, frontispiece, groundwork, preparation, overture, exordium, symphony, premises, prefigurement, omen, precursory, prelusive, prelusory, preludious, proemial, introductory, prefatory, prodromous, inaugural, preliminary, precedent, a precedent embalms a principle.
Priority
N
priority, antecedence, anteriority, precedence, pre-existence, precession, precursor, the past, premises, prior, previous, preceding, precedent, anterior,
antecedent, pre- existing, pre-existent, former, foregoing, aforementioned, before- mentioned, abovementioned, aforesaid, said, introductory, before, prior to, earlier, previously, afore, aforehand, beforehand, ere, theretofore, erewhile, ere then, ere now, before then, before now, erewhile, already, yet, beforehand, on the eve of, prior tempore prior jure.