adverb

in the past; in earlier times.

Mumbai, formerly Bombay

previously,earlier,earlier on,before,until now/then,hitherto,née,once,as was,once upon a time,at one time,at an earlier time,in the past,in days gone by,back in the day,in years gone by,in times gone by,in bygone days,in times past,in former times,in earlier times,time was when,back,ago,heretofore