depress, reflect, discourage, crumble, demoralize, cost, humble, sadden, dispirit, dishearten, dismay, humiliate, disappoint, embarrass, hit one hard, let oneself down, lose one's confidence, blame (oneself/others), give in/up

grab, clutch, choke, contract, scratch, hurl, bend, curl up, knuckle, wriggle, totter, cry, hiss, snort, grunt, water, pant, whimper, tremble, moisten, crumple, bead up, blanch, reel, toss and turn, gag, purge, bulge, huff, puff, gasp, cringe, flinch, shiver, shudder, wince, twinge, grimace, vomit, barf, throw up, swell, sob, wail, moan, bawl, sniffle, snivel, weep, blubber, writhe, blister, bloat, groan, pass out, break out in, rub one's eyes, stroke (a sore spot), grit (teeth), peel, struggle (for breath), hold (one's head), drain (color), scrunch (one's face in pain), suck in/on

falter, replace, slip, neglect, wane, peter out, waver, fail to, lapse, relapse, renege, substitute, flag, revert, break (tradition), drag one's feet, backtrack, slack (off), break (vow/promise), welsh on, welch on, defrock, laicize