the front / the past / previous

a portion, an amount / ago

counter for irregularly shaped objects such as desks, armrests, and serving trays / counter for kami and shrines

necessary evil

necessity (quality or state of being necessary, unavoidable, or absolutely requisite)

unnecessary

needlessness

beforehand; in advance

time's up

(informal) increasing the size of one's chest / (informal) of one's chest, becoming larger