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

46 entries under compact topic. ×

0
hard-handed(adjective, set, strong, hard)
0
hard as nails(expression, adjective, idiom, set, strong)
0
indurate(adjective, set, strong, hard, firm)
0
iron(adjective, set, strong, hard, firm)
0
narrow(adjective, close, solid, short, substantial)
0
restricted(adjective, close, solid, short, substantial)
<123>
For more, visit Impenetrable on Power Thesaurus
11 years ago|15k views|share |citing 
APASmart Define. (2015). impenetrable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/impenetrable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impenetrable thesaurus" https://smartdefine.org/impenetrable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, impenetrable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/impenetrable/thesaurus/synonyms>.
MLASmart Define. "impenetrable thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/impenetrable/thesaurus/synonyms>