At an earlier time or formerly:
— She had previously lived in Chicago.
— He was previously president of a bank.
— Better than anything previously proposed.
— A previously unquestioned attitude.

synonym: antecedently.

Roget 116: before, prior to; earlier; previously etc. adj.; afore^†, aforehand^†, beforehand, ere, theretofore, erewhile^†; ere then, ere now, before then, before now; erewhile^†, already, yet, beforehand; on the eve of.    ... show more