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Definitions of stiffen
  1. verb
    severely restrict in scope or extent
    "stiffen the regulations"
  2. verb
    become stiff or stiffer
    "He stiffened when he saw his boss enter the room"
    Opposite:
    type of:
  3. verb
    make stiff or stiffer
    Opposite:
    type of:
Examples of stiffen
  • "stiffen the regulations"
  • "He stiffened when he saw his boss enter the room"
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