past
adjective
noun
she gave little away about her past:
history, background, life story, life, experience, career to date, biography.
□ in the past
some of the shelters may have been habitation sites in the past:
formerly, previously, in days/years/times gone by, in bygone days, back in the day, in former times, in the (good) old days, at one time, in days of old, in the olden days, in olden times, in the before times;
before, hitherto, once, once upon a time, time was when, in auld lang syne, long ago, in antiquity;
literary in days of yore, of yore, in yesteryear.
preposition
□ past itinformal
I was told I was past it when I was 28:
past one's prime, not as young as one was, not as young as one used to be;
in one's dotage, long in the tooth, as old as the hills;
elderly, old, aged, senior, ancient, venerable;
decrepit, doddering, doddery, not long for this world;
informal over the hill, no spring chicken;
formal senescent.