65 entries under impassive topic. ×

3
dispassionate(adjective, calm, dull, cool, flat)
3
objective(adjective, detached, unresponsive, dispassionate)
3
unfeeling(adjective, calm, dull, cool, flat)
2
blank(adjective, cool, detached, sober, unfeeling)
2
glacial(adjective, cool, detached, blank, aloof)
2
hard-hearted(adjective, detached, unresponsive, laid-back)
2
heartless(adjective, cool, detached, blank, sober)
2
impersonal(adjective, cool, detached, unfriendly, blank)
2
unaffected(adjective, detached, blank, unemotional)
2
unimpassioned(adjective, cool, detached, unfriendly, blank)
2
unsympathetic(adjective, cool, detached, unfriendly, aloof)
1
along for the ride(expression, adjective, idiom, calm, dull)
1
blah(adjective, calm, dull, flat, detached)
1
callous(adjective, detached, unfriendly, unemotional)
1
cold fish(expression, adjective, cool, detached, blank)
1
coldhearted(adjective, detached, unresponsive, laid-back)
1
composed(adjective, calm, close, quiet, gentle)
1
cool cat(expression, adjective, cool, detached, blank)
1
deadpan(adjective, calm, dull, cool, flat)
1
flat(adjective, calm, dull, cool, detached)
11 years ago|5.9k views|share |citing 
APASmart Define. (2015). undemonstrative thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/undemonstrative/thesaurus/synonyms
ChicagoSmart Define. 2015. "undemonstrative thesaurus" https://smartdefine.org/undemonstrative/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, undemonstrative thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/undemonstrative/thesaurus/synonyms>.
MLASmart Define. "undemonstrative thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/undemonstrative/thesaurus/synonyms>