AskDefine | Define stiffen

Dictionary Definition



1 become stiff or stiffer; "He stiffened when he saw his boss enter the room" [ant: loosen]
2 make stiff or stiffer; "Stiffen the cream by adding gelatine" [ant: loosen]
3 restrict; "Tighten the rules"; "stiffen the regulations" [syn: tighten, tighten up, constrain]

User Contributed Dictionary




  1. To make stiff.
  2. To become stiff.


To make stiff
  • Finnish: jäykistää
  • French: raidir
  • Romanian: întări
To become stiff
  • Finnish: jäykistyä
  • French: raidir
  • Romanian: întări
Translations to be checked

Related terms

Synonyms, Antonyms and Related Words

amplify, back, be tough, beef up, brace, brace up, buttress, case harden, charge, clot, coagulate, confirm, congeal, crystallize, electrify, endure, energize, fortify, galvanize, generate, gird, hang tough, harden, invigorate, jell, loop in, nerve, plug in, prop, refresh, reinforce, reinvigorate, restrengthen, rigidify, screw up, set, shock, shore up, short, short-circuit, solidify, steel, step down, step up, strengthen, support, sustain, switch off, switch on, tauten, temper, tense, thicken, tighten, toughen, trice up, turn off, turn on, undergird
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