WordNet sense 1 (the time that has elapsed):

yesteryear, yore, past times

WordNet sense 2 (a verb tense that expresses actions or states in the past):

past tense

WordNet sense 3 (of the immediate past or just previous to the present time):

late, recent

WordNet sense 4 ((used especially of persons) of the immediate past):

former, previous

WordNet sense 5 (belonging to some prior time):

old

WordNet sense 6 (belonging to the distant past):

early

WordNet sense 7 (well in the past; former):

bygone, foregone, gone

WordNet sense 8 (belonging to times long past especially of the historical period before the fall of the Western Roman Empire):

ancient

WordNet sense 9 (gone by; or in the past):

ago, agone

WordNet sense 10 (of a person who has held and relinquished a position or office):

preceding, retiring

WordNet sense 11 (so as to pass a given point):

by