[1] : WordNet (r) 2.0

pass away
     v 1: pass from physical life and lose all all bodily attributes
          and functions necessary to sustain life; "she died from
          cancer"; "they children perished in the fire"; "the
          patient went peacefully" syn: die, decease, perish,
           go, exit, expire, pass ant: be born
     2: go out of existence; "she hoped that the problem would
        eventually pass away"
see also:
die decease perish go exit expire 
pass be born 

[2] : Moby Thesaurus II by Grady Ward, 1.0

95 moby thesaurus words for "pass away":
   be all over, be annihilated, be consumed, be destroyed,
   be done for, be gone, be lost, be no more, be superseded,
   be wiped out, become extinct, become void, blow over, cash in,
   cease, cease to be, cease to exist, cease to live, come to naught,
   come to nothing, conk out, decease, dematerialize, demise, depart,
   depart this life, die, die away, die out, disappear, dispel,
   disperse, dissipate, dissolve, do a fade-out, drop, dwindle,
   elapse, end, erode, evanesce, evaporate, exit, expire, fade,
   fade away, fade out, fall, fall asleep, fall into disuse, flee,
   fleet, flit, fly, go, go away, go out, have it, have its time,
   hide, lapse, leave no trace, leave the scene, melt, melt away,
   melt like snow, obsolesce, part, pass, pass on, pass out,
   pass over, peg out, perish, peter out, put off mortality,
   quit this world, retire from sight, return to dust, run its course,
   run out, sink, sink away, stop breathing, succumb,
   suffer an eclipse, superannuate, up and die, vanish,
   vanish from sight, waste, waste away, wear away, wear off,
   yield the ghost

Away >> A Words
Away, definition of term: Away
away_pag1.html

Chip Away >> C Words
Chip Away, definition of term: Chip Away
chip+away_pag1.html

Come Away >> C Words
Come Away, definition of term: Come Away
come+away_pag1.html

Cut Away >> C Words
Cut Away, definition of term: Cut Away
cut+away_pag1.html

Chase Away >> C Words
Chase Away, definition of term: Chase Away
chase+away_pag1.html

Cast Away >> C Words
Cast Away, definition of term: Cast Away
cast+away_pag1.html

Blow Away >> B Words
Blow Away, definition of term: Blow Away
blow+away_pag1.html

Break Away >> B Words
Break Away, definition of term: Break Away
break+away_pag1.html

Carry Away >> C Words
Carry Away, definition of term: Carry Away
carry+away_pag1.html