Synonyms of earliest

2 Syllables
headmost, primal, oldest, premier, taintless
3 Syllables
pristine, germinal, substratal, initial, primeval, savage, primary, unspotted
4 Syllables
prehistoric, archetypal, pre-historic, undebased, unevolved, inceptive, primitive, original, unpolluted
5 Syllables
aboriginal, initiatory