Synonyms|7Antonyms|1|Broader|0Narrower|0Related|0
5
heave a sigh of relief
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APASmart Define. (2011). become concerned thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/become_concerned/thesaurus/antonyms
ChicagoSmart Define. 2011. "become concerned thesaurus" https://smartdefine.org/become_concerned/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2011, become concerned thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/become_concerned/thesaurus/antonyms>.
MLASmart Define. "become concerned thesaurus" 29 May 2011. Web. 25 September 2026. <https://smartdefine.org/become_concerned/thesaurus/antonyms>