Synonyms of tightening

1 Syllable
pinch, screw, stretch, cramp, crush, fix, clench, grip, bind, strain
2 Syllables
compress, squeeze, stiffen, narrow, contract, harden, tensing, toughen, tense, fasten, strangle, tauten, congeal, close
3 Syllables
contractions, narrowing, contraction, condense, secure, pressure
4 Syllables
rigidify, strangulation, strangulations