4
screw(verb, hold, secure, turn, join)
4
strengthen(verb, hold, fix, secure, join)
3
abbreviate(verb, close, decline, reduce, diminish)
3
belay
3
cement(verb, hold, fix, secure, settle)
3
clench(verb, decline, reduce, restrain, diminish)
3
constringe(verb, contract, contraction)
3
firm
3
moor(verb, hold, fix, secure, position)
3
press(verb, close, restrict, crowd, condense)
3
pull(verb, go, cover, open, run)
3
reinforce(verb, fix, prepare, ready, steady)
3
rigidify(verb, hunch, jellied, constrict, stiffen)
3
screw up(verb, phrasal verb, junction)
3
shorten(verb, close, restrict, crowd, condense)
3
slenderize(verb, narrow)
3
slim(verb, narrow)
3
subdue
3
subjugate
3
thin(verb, adjective, narrow)
11 years ago|8k views|share |citing 
APASmart Define. (2015). tighten thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/tighten/thesaurus/synonyms
ChicagoSmart Define. 2015. "tighten thesaurus" https://smartdefine.org/tighten/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, tighten thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/tighten/thesaurus/synonyms>.
MLASmart Define. "tighten thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/tighten/thesaurus/synonyms>