7 entries under closed topic. ×

15
hermetic(verb, adjective, tight, proof)
7
closed(verb, adjective, enclosed, sealed)
3
secure(verb, adjective)
3
shut(verb, adjective, sealed)
1
clenched
1
unopened
1
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APASmart Define. (2015). airtight thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/airtight/thesaurus/synonyms
ChicagoSmart Define. 2015. "airtight thesaurus" https://smartdefine.org/airtight/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, airtight thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/airtight/thesaurus/synonyms>.
MLASmart Define. "airtight thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/airtight/thesaurus/synonyms>