Synonyms|578Antonyms|103|Broader|5Narrower|10Related|232
1
heartless(adjective, indifferent, detached, distant, apathetic)
1
heavy(adjective, set, hard, tough, solid)
1
heedless(adjective, mean, violent, indifferent, wild)
1
hermetical
1
hidebound
1
highbrow(adjective, indifferent, detached, distant, apathetic)
1
holeproof
1
home-free(adjective, secure, safe, snug, intact)
1
impartial(adjective, indifferent, detached, distant, apathetic)
1
impassible(adjective, bad, cold, aloof, no feelings)
1
impersuadable
1
impersuasible
1
impervious to
1
impracticable(adjective, obstinacy)
1
in safety(expression, adjective, secure, safe, snug)
1
inattentive(adjective, indifferent, detached, distant, apathetic)
1
indestructible(adjective, invulnerable)
1
indurate(adjective, bad, cold, aloof, no feelings)
1
indurated
1
inextricable(adjective, impossibility)
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APASmart Define. (2015). impervious thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/impervious/thesaurus/synonyms
ChicagoSmart Define. 2015. "impervious thesaurus" https://smartdefine.org/impervious/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, impervious thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/impervious/thesaurus/synonyms>.
MLASmart Define. "impervious thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/impervious/thesaurus/synonyms>