n. 25B6; adjective
memories of times past : GONE (BY), over (and done with), no more, done, bygone, former, (of) old, olden, long-ago; poetic/literary of yore.
the past few months : LAST, recent, preceding.
a past chairman : PREVIOUS, former, foregoing, erstwhile, one-time, sometime, ex-; formal quondam.
25B6; noun details about her past : HISTORY, background, life (story).
she walked past the cafe : IN FRONT OF, by.
he's past retirement age : BEYOND, in excess of.
25B6; adverb they hurried past : ALONG, by, on.
25A0; in the past FORMERLY, previously, in days/years/times gone by, in former times, in the (good) old days, in days of old, in olden times, once (upon a time); poetic/literary in days of yore, in yesteryear.