| cryptic | |
| cynical | |
| dawdling | |
| debatably | |
| debated | |
| deceitful | |
| deep | |
| deep in thought | |
| defenseless | |
| delphic | |
| deniable | |
| devious | |
| devour | |
| diffident | |
| dim | |
| dine | |
| dingy | |
| disbelieving | |
| discolor | |
| dishonest |
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| APA | Smart Define. (2016). sure thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sure/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "sure thesaurus" https://smartdefine.org/sure/thesaurus/antonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, sure thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sure/thesaurus/antonyms>. |
| MLA | Smart Define. "sure thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/sure/thesaurus/antonyms> |