coarsen (v.)
- adulterate
- alloy
- boss
- canker
- carnalize
- cheapen
- confound
- contaminate
- corrupt
- debase
- debauch
- defile
- deflower
- degenerate
- degrade
- denature
- deprave
- desecrate
- despoil
- devalue
- distort
- gnarl
- grain
- granulate
- horripilate
- infect
- misuse
- pervert
- poison
- pollute
- popularize
- prostitute
- ravage
- ravish
- rough
- roughen
- smooth
- stud
- taint
- twist
- ulcerate
- violate
- vitiate
- vulgarize
- warp