7
tighten(verb, hold, increase, open, loose)
5
contract
4
stiffen(verb, weaken, soften)
4
choke with
3
attach(verb, hold, increase, separate, loose)
3
fasten(verb, hold, increase, separate, release)
3
disenfranchise
2
fetter(verb, hold, release, free)
2
fold(noun, verb, smooth, enclose, straighten)
2
restrain(verb, hold, help, increase, release)
2
fix(verb, cool, disorder, detach)
2
harden(verb, upset, open, thin)
2
imprison(verb, hold, increase, tighten)
2
lock(open, unlock)
2
nail(separate, detach)
1
adhere(verb, ignore, stick, overlook, stuck)
1
bind(separate, remove, forget, uncover)
1
bond(verb, open, stick, fasten)
1
bridle
1
clamp(verb, fasten)
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APASmart Define. (2016). loosen thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/loosen/thesaurus/antonyms
ChicagoSmart Define. 2016. "loosen thesaurus" https://smartdefine.org/loosen/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, loosen thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/loosen/thesaurus/antonyms>.
MLASmart Define. "loosen thesaurus" 26 February 2016. Web. 26 September 2026. <https://smartdefine.org/loosen/thesaurus/antonyms>