Synonyms|713Antonyms|152|Broader|9Narrower|8Related|663

8 entries under adjective topic. ×

1
illegible
1
impervious
1
non-transparent
1
property
1
state
1
unaccountable
1
unexplainable
1
unfathomable
For more, visit Impenetrable on Power Thesaurus
11 years ago|243 views|share |citing 
APASmart Define. (2015). impenetrable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/impenetrable/thesaurus/broader
ChicagoSmart Define. 2015. "impenetrable thesaurus" https://smartdefine.org/impenetrable/thesaurus/broader (accessed September 23, 2026).
HarvardSmart Define 2015, impenetrable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/impenetrable/thesaurus/broader>.
MLASmart Define. "impenetrable thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/impenetrable/thesaurus/broader>