100 entries under apathetic topic. ×

1
deaf to(verb, expression, adjective, phrasal verb, hard)
1
debilitated(adjective, dull, heavy, stupid, idle)
1
dilatory(adjective, dull, heavy, stupid, idle)
1
dormant(adjective, dull, heavy, still, weary)
1
draggy(adjective, dull, simple, heavy, indifferent)
1
hard-bitten(adjective, hard, tough, careless, indifferent)
1
hard-boiled(adjective, calm, hard, tough, careless)
1
hardhearted(adjective, hard, careless, indifferent, cruel)
1
having spring fever(expression, adjective, idiom, dull, heavy)
1
impenitent(adjective, hard, careless, indifferent, cruel)
1
inflexible(adjective, hard, secure, careless, indifferent)
1
inured(adjective, hard, careless, indifferent, cruel)
1
laid back(expression, adjective, calm, cool, relaxed)
1
obdurate(adjective, hard, secure, careless, indifferent)
1
offhand(adjective, calm, cool, relaxed, restrained)
1
sleepy(adjective, dull, slow, relaxed, still)
1
slothful(adjective, dull, stupid, still, idle)
1
slumberous(adjective, dull, stupid, still, idle)
1
somnolent(adjective, dull, relaxed, stupid, weary)
1
stretchy(adjective, dull, stupid, idle, weary)
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APASmart Define. (2015). impassive thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/impassive/thesaurus/synonyms
ChicagoSmart Define. 2015. "impassive thesaurus" https://smartdefine.org/impassive/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, impassive thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/impassive/thesaurus/synonyms>.
MLASmart Define. "impassive thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/impassive/thesaurus/synonyms>