9
fasten(verb, separate, release, secure, join)
5
fix(verb, close, cool, disorder, detach)
4
bind(verb, separate, remove, forget, uncover)
4
secure(verb, close, disregard, fail, attach)
4
tie(noun, verb, separate, divide, connect)
2
attach(verb, separate, join, loose, fasten)
2
adjoin
2
append
2
bar(noun, verb, open, secure, loose)
2
bolt(noun, verb, fasten)
2
button(noun, verb, close)
2
clamp(verb, fasten, loosen)
2
clasp(verb, close, open, release)
2
disenfranchise
2
engage(verb, break, retreat, shun)
2
hook(noun, detach)
2
join(verb, part, open, loose)
2
knot
2
lace(verb, fasten, intertwine)
2
link(verb, separate, loose, connect)
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APASmart Define. (2016). unfasten thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unfasten/thesaurus/antonyms
ChicagoSmart Define. 2016. "unfasten thesaurus" https://smartdefine.org/unfasten/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2016, unfasten thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unfasten/thesaurus/antonyms>.
MLASmart Define. "unfasten thesaurus" 26 February 2016. Web. 27 September 2026. <https://smartdefine.org/unfasten/thesaurus/antonyms>