WordWeb Online

1. Made or having become thick
   "thickened bronchial arteries"
    
2. Having calluses; having skin made tough and thick through wear
   "thickened skin";
   - calloused, callous
    
3. Made thick in consistency
   "flour-thickened gravy"; "dust-thickened saliva"

1. Make thick or thicker
   "Thicken the sauce";
   - inspissate
    
2. Become thick or thicker
   "The sauce thickened";
   - inspissate
    
3. Make viscous or dense
   "thicken the sauce by adding flour";
   - inspissate

See also: thick, tough, toughened

Type of: alter, change, change integrity, change state, modify, turn

Antonym: thin