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

125 entries under dense topic. ×

0
squashed(adjective, solid, compressed)
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squeezed(adjective, solid, compressed)
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swarming
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teeming
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tightly packed(expression, adjective, solid, impassable)
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APASmart Define. (2015). impenetrable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/impenetrable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impenetrable thesaurus" https://smartdefine.org/impenetrable/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, impenetrable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/impenetrable/thesaurus/synonyms>.
MLASmart Define. "impenetrable thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/impenetrable/thesaurus/synonyms>