chuck, stoop, slouch, slump, shrug, slacken, skip, submit, surrender, weaken, cut short, abdicate, quit, plummet, fall, opt out, yield, come to terms with, give up, accede, resign oneself, hit bottom, bail out, abandon (hope), mope, brood, capitulate, lose ground, acquiesce, isolate oneself, forgo, cede, drop out, sink into (depression), lose hope, stop trying/working, accept (defeat), sever (contact), throw in the towel, default (on one's payments), raise (a white flag), hang (one's head), drown, fall off (in one's duties), let go (of one's dreams), step down/away, slide into depression, give away
slack off, hide, slough off, elude, evade, neglect, welsh, welch, abdicate, bail, fail to, parry, dodge, shirk, avoid, fritter away, shrink from, misuse, malinger, goof off, back down, get out of, fall off (in his duties), duck out of, cop out of, cut (class), drag (one's feet), play hooky, wriggle out of, pass up (an opportunity), give up on, back out of
zap, pelt, whisk, scoot, skid, fly, buzz, chase, race, skedaddle, pursue, advance, gain momentum, zip, spin, zoom, accelerate, hustle, abscond, cut off, hurry, speed, rush, skyrocket, speed up, quicken, careen, whip, bomb, barrel, escape, hightail it, hurtle, hasten, career, skate, swerve, zing, whiz, veer, kick up (dust), tear through/around (town), pick up speed, gain on, gain speed, pass (a slow-moving car), gather speed, exceed (speed limit)
scoot, split, skip, bolt, skedaddle, retreat, vanish, disappear, take off, abscond, skip town, flee, dash, escape, duck out, vamoose, turn tail, run away/off, run for it, cut out, scram, break free/out, slip away, cut and run, beat it, make a getaway, take to one's heels, take flight, head for the hills, get away