previously

adverb3

1. •
   at some time before now or before then

   • The discovery of a previously unknown species had taken place nearly two years previously.
2. •
   Recapitulating the preceding episodes of a series.
3. •
   (no longer used) First; beforehand, in advance.

   • I must, however, previously remark, that the power of generalizing ideas, to any great extent, is not very common amongst men or women. — 1791