Synonyms for before

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1. In time

   previously, earlier, in the past, since, already, gone by, ago, in old days, heretofore, formerly, anteriorly, antecedently, in days of yore, back, sooner, up to now, ahead, in front, in advance, beforehand, afore, ere, facing, BP, before the present.

   Antonyms in the future, to come, now*.

2. In space

   ahead, in advance, in front, advanced; see ahead 2.