Synonyms|713Antonyms|152|Broader|9Narrower|8Related|663
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astute
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available
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basic
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bendable
0
brighten
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certain
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cogent
0
coherent
0
compelling
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conceivable
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connected
0
construe
0
consuming
0
convincing
0
crossable
0
defenseless
0
define
0
diaphanous
0
distinct
0
effulgent
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APASmart Define. (2015). impenetrable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/impenetrable/thesaurus/antonyms
ChicagoSmart Define. 2015. "impenetrable thesaurus" https://smartdefine.org/impenetrable/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2015, impenetrable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/impenetrable/thesaurus/antonyms>.
MLASmart Define. "impenetrable thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/impenetrable/thesaurus/antonyms>