crumble (v.)
- abate
- ablate
- abrade
- atomize
- bate
- beat
- bray
- break
- brecciate
- canker
- collapse
- comminute
- consume
- corrode
- corrupt
- crumb
- crush
- decay
- decline
- decompose
- decrease
- deliquesce
- diminish
- disintegrate
- disjoin
- disorganize
- dissolve
- dive
- droop
- drop
- dwindle
- ebb
- effloresce
- erode
- fade
- fail
- faint
- fall
- fester
- flag
- flour
- fragment
- gangrene
- grain
- granulate
- grate
- grind
- languish
- lessen
- mash
- mildew
- mill
- mold
- molder
- mortify
- mush
- necrose
- pestle
- pine
- plummet
- plunge
- pound
- powder
- pulverize
- putrefy
- rankle
- rot
- sag
- scrunch
- shiver
- shred
- shrink
- sink
- smash
- sphacelate
- split
- spoil
- squash
- subside
- suppurate
- taint
- topple
- tumble
- turn
- wane
- waste
- weaken
- wear
- wilt
- yield