Synonyms|713Antonyms|152|Broader|9Narrower|8Related|663
0
incisive
0
indubitable
0
infiltrating
0
informative
0
instructive
0
known
0
liable
0
limpid
0
lucent
0
luminous
0
malleable
0
manifest
0
mild
0
navigable
0
noticeable
0
observable
0
offered
0
open
0
open-and-shut
0
ordered
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APASmart Define. (2015). impenetrable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/impenetrable/thesaurus/antonyms
ChicagoSmart Define. 2015. "impenetrable thesaurus" https://smartdefine.org/impenetrable/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2015, impenetrable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/impenetrable/thesaurus/antonyms>.
MLASmart Define. "impenetrable thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/impenetrable/thesaurus/antonyms>