54
calm
26
cool(adjective, quiet)
25
carefree(adjective, troubled, lighthearted, untroubled)
19
peaceful(adjective, quiet, cool)
19
worry-free
13
unconcerned(adjective, quiet, cool, sympathetic)
12
happy(adjective, quiet, cool)
10
undisturbed(adjective, calm, affected)
8
unwilling(adjective, quiet, cool)
8
unworried(adjective, quiet, cool, perturbed)
8
courageous(adjective, quiet, cool)
7
insouciant(adjective, casual, easygoing)
7
dreading(verb, adjective, unenthusiastic)
6
happy-go-lucky
6
tranquil
5
indifferent
5
content(noun, adjective, quiet, cool)
5
collected(adjective, quiet, cool)
4
assured(verb, adjective, quiet, cool)
4
brave(adjective, quiet, cool)
<12345…10>
10 years ago|4.2k views|share |citing 
APASmart Define. (2016). anxious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/anxious/thesaurus/antonyms
ChicagoSmart Define. 2016. "anxious thesaurus" https://smartdefine.org/anxious/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, anxious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/anxious/thesaurus/antonyms>.
MLASmart Define. "anxious thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/anxious/thesaurus/antonyms>