ROGET THESAURUS
precession
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.
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.
Precession
N
precession, leading, heading, precedence, priority, the lead, le pas, van, precursor, leading, precedent, in advance, before, ahead, in the van, in the lead, foremost, headmost, in front, at the head, out in front, way out in front, far ahead, seniores priores, ahead of his time.