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minor(seriously, grievously, deplorably)
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APASmart Define. (1970). with a straight face thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/with_a_straight_face/thesaurus/antonyms
ChicagoSmart Define. 1970. "with a straight face thesaurus" https://smartdefine.org/with_a_straight_face/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 1970, with a straight face thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/with_a_straight_face/thesaurus/antonyms>.
MLASmart Define. "with a straight face thesaurus" 1 January 1970. Web. 26 September 2026. <https://smartdefine.org/with_a_straight_face/thesaurus/antonyms>