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inconsolably
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inconvenience
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incorrectly
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infelicitously
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inimically
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insalubriously
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intentionally
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irk
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irrelevantly
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irritably
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irritate
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judgmentally
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lamentably
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languidly
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lividly
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longingly
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low
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lucklessly
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APASmart Define. (2016). happily thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/happily/thesaurus/antonyms
ChicagoSmart Define. 2016. "happily thesaurus" https://smartdefine.org/happily/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2016, happily thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/happily/thesaurus/antonyms>.
MLASmart Define. "happily thesaurus" 23 March 2016. Web. 27 September 2026. <https://smartdefine.org/happily/thesaurus/antonyms>