vverb.changebecome stiff or stifferExamples:- He stiffened when he saw his boss enter the room
Antonyms:loosen
Derivationally Related Form:stiffening
Hypernyms:change
Inherited Hypernyms:stiffenchange
Direct Hyponyms:rigidify
Full Troponyms:rigidify
Sentence Frame:Something ---s | Somebody ---s
vverb.changemake stiff or stifferExamples:- Stiffen the cream by adding gelatine
Antonyms:loosen
Derivationally Related Form:stiffeningstiffener
Hypernyms:alter change modify
Inherited Hypernyms:stiffenchange
Direct Hyponyms:buckramossifypetrifyrigidifystarch
Causes:stiffen
Full Troponyms:buckramrigidifystarch
Sentence Frame:Somebody ---s something | Something ---s something
vverb.changeseverely restrict in scope or extentSynset:constrain tighten tighten up
Examples:- tighten the rules
- stiffen the regulations
Hypernyms:bound confine limit restrict throttle trammel
Inherited Hypernyms:stiffenrestrict
Sentence Frame:Somebody ---s something