33 entries under seriously topic. ×

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in all seriousness(expression, idiom, adverb, sternly)
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in earnest(expression, adverb, sternly)
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intently(adverb, sternly)
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not humorously(expression, adverb, sternly)
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passionately(adverb, sternly)
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purposefully(adverb, sternly)
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resolutely(adverb, sternly)
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simmer down(expression, adverb, sternly)
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straighten out(expression, adverb, sternly)
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with a straight face(expression, idiom, adverb, sternly)
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with forethought(expression, adverb, sternly)
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with sobriety(expression, adverb, sternly)
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zealously(adverb, sternly)
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APASmart Define. (2016). grimly thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/grimly/thesaurus/synonyms
ChicagoSmart Define. 2016. "grimly thesaurus" https://smartdefine.org/grimly/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, grimly thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/grimly/thesaurus/synonyms>.
MLASmart Define. "grimly thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/grimly/thesaurus/synonyms>