- stiffen - become stiff or stiffer; "He stiffened when he saw his boss enter the room"
--1 is one way to change
Antonyms: loosen, relax, loose
Sample sentences:Derived form: noun stiffening1
Something ----s
Somebody ----s
- stiffen - make stiff or stiffer; "Stiffen the cream by adding gelatine"
--2 is one way to change, alter, modify
Antonyms: loosen, loose
Sample sentences:Derived forms: noun stiffener1, noun stiffening2
Somebody ----s something
Something ----s something
- stiffen, tighten, tighten up, constrain - restrict; "Tighten the rules"; "stiffen the regulations"
--3 is one way to restrict, restrain, trammel, limit, bound, confine, throttle
Sample sentence:
Somebody ----s something