THESAURUS
drop off
abate, ablate, bate, be eaten away, buy it, cascade, cash in, cataract, check in, check out, collapse, come down, consume, consume away, corrode, crash, croak, crumble, decline, decrease, deliquesce, descend, die away, diminish, dip down, dive, dope off, down, doze off, drop, drop asleep, drop down, drowse off, dwindle, ebb, erode, fall, fall asleep, fall away, fall down, fall off, go down, go downhill, go to sleep, go west, gravitate, have it, kick in, kick off, kick the bucket, knock off, languish, lessen, let up, lose altitude, melt away, nod off, parachute, pass out, peg out, pipe off, pitch, plummet, plunge, pop off, pounce, pour down, precipitate, rain, run low, sag, settle to sleep, shove off, shrink, sink, slide, slump, step off, stoop, subside, swoop, tail off, trend downward, wane, waste, waste away, wear, wear away
ROGET THESAURUS
drop off
Decrease
VB
decrease, diminish, lessen, abridge, shrink,
drop off, fall off, tail off, fall away, waste, wear, wane, ebb, decline, descend, subside, melt away, die away, retire into the shade, hide its diminished head, fall to a low ebb, run low, languish, decay, crumble, bate, abate, dequantitate, discount, depreciate, extenuate, lower, weaken, attenuate, fritter away, mitigate, dwarf, throw into the shade, reduce, shorten, subtract.
Inactivity
VB
be inactive, do nothing, move slowly, let the grass grow under one's feet, take one's time, dawdle, drawl, droil, lag, hang back, slouch, loll, lollop, lounge, poke, loaf, loiter, go to sleep over, sleep at one's post, ne battre que d'une aile, take it easy, take things as they come, lead an easy life, vegetate, swim with the stream, eat the bread of idleness, loll in the lap of luxury, loll in the lap of indolence, waste time, consume time, kill time, lose time, burn daylight, waste the precious hours, idle away time, trifle away time, fritter away time, fool away time, spend time in, take time in, peddle, piddle, potter, pudder, dabble, faddle fribble, fiddle-faddle, dally, dilly-dally, sleep, slumber, be asleep, hibernate, oversleep, sleep like a top, sleep like a log, sleep like a dormouse, sleep soundly, heavily, doze, drowze, snooze, nap, take a nap, dream, snore one's best, settle to sleep, go to sleep, go off to sleep, doze off,
drop off, fall asleep, drop asleep, close the eyes, seal up the eyes, seal up eyelids, weigh down the eyelids, get sleep, nod, yawn, go to bed, turn, get some z's, stack z's, languish, expend itself, flag, hang fire, relax, render idle, sluggardize, mitigate.
Death
VB
die, expire, perish, meet one's death, meet one's end, pass away, be taken, yield one's breath, resign one's breath, resign one's being, resign one's life, end one's days, end one's life, end one's earthly career, breathe one's last, cease to live, cease to breathe, depart this life, be no more, go off,
drop off, pop off, lose one's life, lay down one's life, relinquish one's life, surrender one's life, drop into the grave, sink into the grave, close one's eyes, fall dead, drop dead, fall down dead, drop down dead, break one's neck, give up the ghost, yield up the ghost, be all over with one, pay the debt to nature, shuffle off this mortal coil, take one's last sleep, go the way of all flesh, hand in one's checks, pass in one's checks, hand in one's chips, pass in one's chips, join the greater number, join the majority, come to dust, turn to dust, cross the Stygian ferry, cross the bar, go to one's long account, go to one's last home, go to Davy Jones's locker, go to the wall, receive one's death warrant, make one's will, step out, die a natural death, go out like the snuff of a candle, come to an untimely end, catch one's death, go off the hooks, kick the bucket, buy the farm, hop the twig, turn up one's toes, die a violent death.