4
listless(adjective, quiet, temper, cold, negative)
4
strong(adjective, invulnerable)
4
unaffected(adjective, temper, cold, negative, aloof)
4
uncaring(adjective, bad, temper, cold, negative)
4
unemotional(cold, indifferent, unyielding)
4
unimpressionable(adjective, hard, affect, dead, impassive)
4
unresponsive(adjective, quiet, bad, hard, cold)
4
unsympathetic(adjective, quiet, bad, cold, aloof)
3
bloodless(adjective, hard, difficult, troubled, inflexible)
3
disinterested(adjective, temper, cold, negative, aloof)
3
dispassionate(adjective, cold, indifferent, unyielding)
3
frigid(adjective, temper, cold, negative, behave)
3
icy(adjective, temper, cold, negative, behave)
3
immovable
3
inhuman(adjective, bad, temper, cold, negative)
3
insentient(adjective, bad, cold, aloof, no feelings)
3
invincible(adjective, invulnerable)
3
pococurante(adjective, temper, cold, negative, aloof)
3
protected(adjective, invulnerable)
3
safe(adjective, invulnerable)
11 years ago|2.1k views|share |citing 
APASmart Define. (2015). impassible thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/impassible/thesaurus/synonyms
ChicagoSmart Define. 2015. "impassible thesaurus" https://smartdefine.org/impassible/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, impassible thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/impassible/thesaurus/synonyms>.
MLASmart Define. "impassible thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/impassible/thesaurus/synonyms>