30 entries under loose topic. ×

9
fasten(verb, separate, release, secure, join)
2
attach(verb, separate, join, fasten)
2
bar(noun, verb, open, secure)
2
join(verb, part, open)
2
link(verb, separate, connect)
1
cling(verb, attach)
1
close(verb, adjective, open, unblock)
1
clutch(verb, release, grab, snatch)
1
hitch(verb, join, fasten, undo)
1
peg(verb, attach)
1
pin(verb, hold, attach)
0
be on a par
0
be true to
0
bundle
0
buttoned up(expression, refuse)
0
cling to(expression, loosen)
0
hang in
0
hang onto
0
keep up with(expression, idiom, fail)
0
latch onto(expression, separate)
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APASmart Define. (2016). unfasten thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unfasten/thesaurus/antonyms
ChicagoSmart Define. 2016. "unfasten thesaurus" https://smartdefine.org/unfasten/thesaurus/antonyms (accessed September 30, 2026).
HarvardSmart Define 2016, unfasten thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unfasten/thesaurus/antonyms>.
MLASmart Define. "unfasten thesaurus" 26 February 2016. Web. 30 September 2026. <https://smartdefine.org/unfasten/thesaurus/antonyms>