65 entries under cool topic. ×

2
inexcitable(adjective, blank, aloof, unemotional)
2
inscrutable(adjective, blank, aloof, unemotional)
2
insensible(adjective, dull, quiet, flat)
2
poker-faced(adjective, detached, blank, aloof)
2
unflappable(adjective, calm, blank, aloof)
1
collected(adjective, blank, aloof, unemotional)
1
distant(adjective, cold, indifferent, detached)
1
glacial(adjective, detached, aloof, distant)
1
indurated(adjective, blank, aloof, unemotional)
1
inexpressive(adjective, detached, blank, aloof)
1
matter-of-fact(adjective, calm, unfriendly, blank)
1
reticent(adjective, detached, unfriendly, blank)
1
sedate(adjective, blank, aloof, unemotional)
1
self-contained(adjective, blank, aloof, unemotional)
1
taciturn(adjective, unfriendly, blank, aloof)
1
unimpressible(adjective, blank, aloof, unemotional)
1
unruffled(adjective, blank, aloof, unemotional)
1
wooden(adjective, dull, quiet, flat)
0
coldblooded(aloof, distant)
0
impersonal(adjective, unfriendly, aloof, distant)
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APASmart Define. (2015). passionless thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/passionless/thesaurus/synonyms
ChicagoSmart Define. 2015. "passionless thesaurus" https://smartdefine.org/passionless/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, passionless thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/passionless/thesaurus/synonyms>.
MLASmart Define. "passionless thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/passionless/thesaurus/synonyms>