THESAURUS
vanish
abandon, abscond, be annihilated, be consumed, be destroyed, be done for, be gone, be no more, be wiped out, beat a retreat, bow out, cease, cease to be, cease to exist, clear, come to naught, come to nothing, conk out, dematerialize, depart, die, die away, die out, disappear, dispel, disperse, dissipate, dissolve, do a fade-out, dwindle, end, erode, evacuate, evanesce, evaporate, exit, expire, fade, fade away, fade out, flee, fleet, flit, fly, go, go away, hide, leave no trace, leave the scene, melt, melt away, melt like snow, pass, pass away, pass out, peg out, perish, peter out, quit, remove, retire, retire from sight, retreat, run out, sink, sink away, succumb, suffer an eclipse, vacate,
vanish from sight, waste, waste away, wear away, withdraw
ROGET THESAURUS
vanish
Unsubstantiality
VB
vanish, evaporate, fade, dissolve, melt away, disappear.
Escape
VB
escape, scape, make one's escape, effect one's escape, make good one's escape, break jail, get off, get clear off, get well out of, echapper belle, save one's bacon, save one's skin, weather the storm, escape scot-free, elude &c, make off, march off, give one the slip, slip through the hands, slip through the fingers, slip the collar, wriggle out of prison, break out, break loose, break loose from prison, break away, slip away, get away, find vent, find a hole to creep out of, disappear,
vanish.
Transientness
VB
be transient, flit, pass away, fly, gallop,
vanish, fade, evaporate, pass away like a cloud, pass away like a summer cloud, pass away like a shadow, pass away like a dream.
Disappearance
VB
disappear,
vanish, dissolve, fade, melt away, pass, go, avaunt, evaporate, vaporize, be gone, leave no trace, leave 'not a rack behind', go off the stage, suffer an eclipse, undergo an eclipse, retire from sight, be lost to view, pass out of sight, lose sight of, efface.