Synonyms of whilom

1 Syllable
first, past, late, prior, old, once
2 Syllables
former, earlier, quondam, oncer, ex-, ancient
3 Syllables
departed, above, erstwhile, preceding, foregoing, bygone, one-time, anterior
4 Syllables
aforesaid, antecedent, sometime
6 Syllables
aforementioned