2
coy(adjective, modest)
2
discreet(calm, quiet, reasonable, mild, controlled)
2
frosty(adjective, cool, aloof, distant)
2
glacial(adjective, cool, detached, blank, aloof)
2
hard-hearted(adjective, detached, impassive, unresponsive, laid-back)
2
heartless(adjective, cool, detached, blank, sober)
2
impersonal(adjective, cool, detached, unfriendly, blank)
2
impertinent(adjective, cool, indifferent, restrained, reserved)
2
impudent(adjective, cool, indifferent, restrained, reserved)
2
incurious(adjective, quiet, cool, indifferent, restrained)
2
insolent(adjective, cool, indifferent, restrained, reserved)
2
introverted(adjective, quiet, restrained, shy, thoughtful)
2
offended(adjective, cool, indifferent, restrained, reserved)
2
prim(adjective, quiet, gentle, aloof, peaceful)
2
self-controlled(adjective, calm, quiet, gentle, mild)
2
shrinking(adjective, calm, quiet, reasonable, mild)
2
silent(adjective, quiet, restrained, modest, unfriendly)
2
soulless
2
stolid(calm, unemotional, composed)
2
subdued(calm, quiet, reasonable, mild, controlled)
11 years ago|5.9k views|share |citing 
APASmart Define. (2015). undemonstrative thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/undemonstrative/thesaurus/synonyms
ChicagoSmart Define. 2015. "undemonstrative thesaurus" https://smartdefine.org/undemonstrative/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, undemonstrative thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/undemonstrative/thesaurus/synonyms>.
MLASmart Define. "undemonstrative thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/undemonstrative/thesaurus/synonyms>