11
dispassionate(adjective, weak, gentle, unfeeling, impartial)
10
indifferent
7
dull
6
cold(adjective, dull)
5
happy(adjective, dull)
5
bored
4
apathetic(adjective, dull)
4
frigid(adjective, dull)
4
stoic
4
passionless
4
impassive(adjective, cool, weak, gentle, warm)
4
unenthusiastic(adjective, dull, caring, apathetic)
3
cool(adjective, dull)
3
emotionless(adjective, emotional, unfeeling, undemonstrative)
3
disinterested(adjective, feeling)
3
nonchalant
3
peaceful(adjective, weak, gentle)
3
unemotional(adjective, feeling)
2
calm(adjective, cool, weak, gentle, rough)
2
halfhearted
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APASmart Define. (2015). passionate thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/passionate/thesaurus/antonyms
ChicagoSmart Define. 2015. "passionate thesaurus" https://smartdefine.org/passionate/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2015, passionate thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/passionate/thesaurus/antonyms>.
MLASmart Define. "passionate thesaurus" 17 July 2015. Web. 24 September 2026. <https://smartdefine.org/passionate/thesaurus/antonyms>