[1] : WordNet (r) 2.0

fall away
     v 1: get worse; "my grades are slipping" syn: slip, drop off,
           drop away
     2: diminish in size or intensity syn: fall off
see also:
slip drop off drop away fall off 

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

109 moby thesaurus words for "fall away":
   abate, ablate, apostacize, apostatize, ascend, bank, bate,
   be eaten away, be found wanting, bolt, break away, cant, careen,
   change sides, climb, collapse, come short, consume, consume away,
   corrode, crumble, decline, decrease, defect, deliquesce, descend,
   desert, die, die away, diminish, dip, dive, drop, drop off,
   dwindle, ebb, erode, fade, fail, fall, fall off, fall short,
   go down, go downhill, go off, go over, go uphill, grade,
   hit a slump, hit rock bottom, hit the skids, incline, keel, lack,
   lag, languish, lapse, lean, lessen, let up, list, lose ground,
   melt away, not answer, not hack it, not make it, not make out,
   not measure up, not stretch, not suffice, pitch, plummet, plunge,
   rake, reach the depths, retreat, rise, run down, run low,
   run short, sag, secede, shelve, shrink, sidle, sink, slant, slide,
   slip, slope, slump, stop short, subside, swag, sway, switch,
   switch over, tail off, tilt, tip, touch bottom, turn cloak, uprise,
   wane, want, waste, waste away, wear, wear away

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