0
designful(careless, thoughtless)
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desirous
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diplomatic
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done on purpose(expression, idiom, careless, thoughtless)
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doting
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doubting
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eager
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earnest
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enthusiastic
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exact
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fanatical
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farseeing
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fastidious
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fervent
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fine
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finespun
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forehanded
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foreseeing
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forward
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forward-looking
10 years ago|2.2k views|share |citing 
APASmart Define. (2016). heedless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/heedless/thesaurus/antonyms
ChicagoSmart Define. 2016. "heedless thesaurus" https://smartdefine.org/heedless/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, heedless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/heedless/thesaurus/antonyms>.
MLASmart Define. "heedless thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/heedless/thesaurus/antonyms>