(adv.) In the manner of, or in accordance with, history.

actually aforetime before before now beforetime certainly earlier erenow erewhile erst factually formerly forsooth heretofore hitherto in fact in reality in the past in times past in truth in very sooth indeed indeedy nothing else but of a truth only yesterday prehistorically previously priorly really really-truly recently then truly undoubtedly verily veritably whilom with truth yesterday