hollow out, hang, droop, sag, shake, shrivel, pop, shrink, spot, mottle, crisscross, thin, gray, firm, crinkle, wrinkle, crease, crumple, darken, yellow, pale, discolor, drain, collapse, draw in, deepen, harden, dry out, line with (age), pull on (the skin), etch (lines into a face)

couple, suck, mate, nurse, stand up, learn, reproduce, suckle, ail, perish, die, crawl, walk, wean, conceive, give birth, procreate, mature, fall ill, sicken, age, circumcise, graduate, achieve, decline, recover, wither, grow up, acculturate, buff up, educate, wear down, shoot up, marry, divorce, grieve, date, injure, wed, menstruate, impregnate, teethe, babble, toddle, talk, individuate, pubesce, adolesce, descend from, pair off/up, fill out, lose one's virginity, rear (one's young), grow apart, retire, senesce, grow old/tired