72 entries under adjective topic. ×

15
insecure(uncertain, worried, dangerous, precarious)
12
vulnerable(strong, open)
10
unprotected(weak, soft, unreliable)
7
unsafe(strong, weak, soft, unreliable)
5
uncertain(clear, weak, soft, doubtful)
5
dangerous(hazardous, troubling)
4
hazardous(strong, safe, unpredictable, dangerous)
4
dubious(clear, honest)
4
feeble(weak, soft, unreliable)
4
unsound(strong, weak, sound, soft)
4
unsure(clear, weak, soft, certain)
3
precarious(strong, stable)
3
shaky(strong, sound)
3
endangered(weak, soft, unreliable)
3
loose(verb, weak, disregard, fail)
3
open(verb, disregard, fail, loosen)
3
questionable
3
risky(strong, safe)
3
undecided(clear, weak, soft, unreliable)
3
undefended
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APASmart Define. (2015). secure thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/secure/thesaurus/antonyms
ChicagoSmart Define. 2015. "secure thesaurus" https://smartdefine.org/secure/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2015, secure thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/secure/thesaurus/antonyms>.
MLASmart Define. "secure thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/secure/thesaurus/antonyms>