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Noun: stiffening  sti-f(u-)ning
  1. The act of becoming stiff
    "stiffening his shoulders, he prepared to advance"
     
  2. The process of becoming stiff or rigid
    - rigidifying, rigidification
Verb: stiffen  sti-fun
  1. Become stiff or stiffer
    "He stiffened when he saw his boss enter the room"
     
  2. Make stiff or stiffer
    "Stiffen the cream by adding gelatine"
     
  3. (of laws or regulations) make more restrictive, or impose greater penalties
    "stiffen the regulations";
    - tighten, tighten up, constrain

Derived forms: stiffenings

Type of: action, activity, alter, bound, change, confine, limit, modify, natural action, natural process, procedure, process, restrain, restrict, throttle, trammel

Antonym: loosen

Encyclopedia: Stiffening