stiffen
verb
1 stiffen
Become stiff or stiffer.
Roget 323: render hard etc. adj.; harden, stiffen, indurate, petrify, temper, ossify, vitrify; accrust†.
Dutch: verstijven, verstrammen
2 stiffen
Make stiff or stiffer.
Dutch: opstijven
3 stiffen
Severely restrict in scope or extent:
— Stiffen the regulations.
synonyms: constrain, tighten, tighten up.
Moby thesaurus: amplify, back, be tough, beef up, brace, brace up, buttress, case harden, charge, clot, coagulate, confirm, congeal, crystallize, electrify, endure, energize, fortify, galvanize, generate ... show more.
stiffened
Moby thesaurus: accelerated, aggrandized, amplified, augmented, backed, beefed-up, bloated, boosted, broadened, calcified, callous, calloused, case-hardened, crusted, crusty, crystallized, deepened, elevated, enhanced, enlarged ... show more.
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