40 entries under self-possessed topic. ×

4
restrained(calm, reticent, controlled, unassuming, undemonstrative)
2
cool(calm, quiet, mild, controlled)
2
discreet(adjective, calm, quiet, reasonable, mild)
2
reserved(calm, reticent, controlled, unassuming)
2
reticent(calm, quiet, reasonable, mild, controlled)
2
shrinking(adjective, calm, quiet, reasonable, mild)
2
subdued(calm, quiet, reasonable, mild, controlled)
1
bottled up(expression, adjective, calm, quiet, reasonable)
1
calm(quiet, mild, controlled)
1
calm and collected(expression, idiom, calm, quiet, reasonable)
1
chilled(adjective, calm, quiet, reasonable, mild)
1
conservative(adjective, calm, quiet, reasonable, mild)
1
controlled(adjective, calm, quiet, reasonable, mild)
1
corked up(expression, adjective, calm, quiet, reasonable)
1
in charge(expression, adjective, calm, quiet, reasonable)
1
in check(expression, adjective, calm, quiet, reasonable)
1
inobtrusive(adjective, calm, quiet, reasonable, mild)
1
laid-back(calm, quiet, reasonable, mild, controlled)
1
mild(calm, quiet, reasonable, controlled)
1
moderate(calm, quiet, reasonable, mild, controlled)
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APASmart Define. (2015). unexpansive thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unexpansive/thesaurus/synonyms
ChicagoSmart Define. 2015. "unexpansive thesaurus" https://smartdefine.org/unexpansive/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, unexpansive thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unexpansive/thesaurus/synonyms>.
MLASmart Define. "unexpansive thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/unexpansive/thesaurus/synonyms>