Synonyms of stiffen

1 Syllable

set, firm, gel, starch, clot, prop, chill, gels, jell, fix, cake

2 Syllables

benumb, gelling, thickens, tense, callus, brace, congeal, steady, infix, jelly, harden, thicken, jelled, firmed, congeals, froze, hardens, strengthen, freeze, gelled, curdle, cement, anneal, candy, jelling, jellying, tighten, tauten, tightens, firming

3 Syllables

congealed, callused, tautening, gelating, pillared, tightening, ossify, inflate, ossifying, condense, thickening, glaciating, calloused, reinforcing, pillaring, congealing, thickened, glaciated, petrify, tightened, vitrifying, calluses, vitrify, jellify, gelate, glaciate, infixed, infixes, densify, gelated, reinforce, callouses

4 Syllables

rigidify, crystallize, indurating, solidifying, inspissated, solidified, fossilize, stabilize, indurate, caseharden, fossilizing, solidify, inspissate, indurated, stabilized, solidifies, stabilizing

5 Syllables

precipitate, coagulate, stabilitate