10
i know(expression, idiom, communication, people, politeness)
8
i get it(expression, idiom, communication, people, politeness)
7
i have information(expression, idiom, communication, people, politeness)
7
i have knowledge(expression, idiom, communication, people, politeness)
6
i understand(expression, idiom, communication, people, politeness)
5
i am clued up(expression, idiom, communication, information, relations)
4
i am sure(expression, idiom, communication, people, politeness)
4
it goes without saying(expression, idiom, knowledge, attitude, perception)
4
surely(adverb, position, confidence, statement)
3
beyond doubt(expression, idiom, knowledge, attitude, perception)
3
certainly(adverb, position, confidence, statement)
3
for sure(adverb, position, confidence, statement)
3
i am acquainted with(expression, idiom, communication, information, people)
3
i am certain(expression, idiom, knowledge, attitude, perception)
3
i see(expression, information, relations, details)
3
undoubtedly(adverb, position, confidence, statement)
2
i am aware(expression, idiom, communication, knowledge, attitude)
2
i am convinced(expression, idiom, knowledge, attitude, perception)
2
i am persuaded(expression, idiom, knowledge, attitude, perception)
2
i am pretty sure(expression, activity, communication, people)
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APASmart Define. (-0001). i don't know thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/i_don%27t_know/thesaurus/antonyms
ChicagoSmart Define. -0001. "i don't know thesaurus" https://smartdefine.org/i_don%27t_know/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define -0001, i don't know thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/i_don%27t_know/thesaurus/antonyms>.
MLASmart Define. "i don't know thesaurus" 30 November -0001. Web. 29 September 2026. <https://smartdefine.org/i_don%27t_know/thesaurus/antonyms>