- At a previous or earlier time; before: museums and art galleries which had previously been open to the public they discovered a previously unknown geneMore example sentences
formerly, earlier, earlier on, before, until now/then, hitherto, once, at one time, in the past, in days gone by, in years gone by, in times gone by, in bygone days, in times past, in former times, time was when; in advance, in readiness, ahead of time, sooner, already, beforehand• formal heretofore
- He has discovered a few previously unknown stars and made them into very good players.
- The reason these new prophecies were previously unknown is that they never made the final cut.
- Having a previously unknown twin sister sneak into the picture would cause anyone to act up.