14
fastened(verb, adjective, strong, secure, firm)
11
guaranteed(verb, adjective, secure, firm, certain)
9
fast(adjective, strong, secure, substantial, stable)
9
assured(verb, adjective, guaranteed)
8
fixed(verb, adjective, strong, secure, firm)
8
warranted(verb, adjective, guaranteed)
7
barred(verb, adjective, limited, controlled, constrained)
7
insured(verb, adjective, guaranteed)
7
safeguarded(verb, adjective, secure, guarded, sheltered)
6
bolted(verb, adjective, strong, secure, substantial)
6
bonded(verb, adjective, guaranteed)
6
latched(verb, adjective, closed)
6
locked(verb, adjective, closed)
5
certified(verb, adjective, guaranteed)
5
closed(verb, adjective, strong, secure, substantial)
5
guarded(verb, adjective, secure, firm, sheltered)
5
captured(verb, acquired, captured)
5
covered(verb, adjective, secure, guarded, sheltered)
5
defended(verb, adjective, secure, firm, guarded)
5
ensured(verb, adjective, guaranteed)
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APASmart Define. (2016). secured thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/secured/thesaurus/synonyms
ChicagoSmart Define. 2016. "secured thesaurus" https://smartdefine.org/secured/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, secured thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/secured/thesaurus/synonyms>.
MLASmart Define. "secured thesaurus" 11 February 2016. Web. 21 September 2026. <https://smartdefine.org/secured/thesaurus/synonyms>