3
heaven knows(expression, idiom, knowledge, mind, perception)
3
heaven only knows(expression, idiom, knowledge, mind, perception)
3
how do i know(expression, idiom, knowledge, attitude, perception)
3
not have the faintest idea(expression, idiom, activity, communication, people)
3
not have the foggiest notion(expression, idiom, activity, communication, people)
3
pass(noun, expression, idiom, activity, communication)
3
search me(expression, idiom, activity, communication, people)
3
who can say(expression, idiom, knowledge, attitude, perception)
3
who knows(expression, idiom, activity, communication, knowledge)
0
for better or for worse(noun, expression, idiom, information, data)
0
cannot begin to explain(noun, expression, idiom, information, data)
0
cannot begin to imagine(noun, expression, idiom, information, data)
0
cannot begin to understand(noun, expression, idiom, information, data)
0
for better or worse(noun, expression, idiom, information, data)
0
i could not tell you(expression, idiom, knowledge, attitude, perception)
0
you got me there(expression, idiom, activity, communication, people)
0
i cannot rightly say(expression, idiom, knowledge, mind, perception)
0
it is all greek to me(expression, idiom, knowledge, mind, perception)
0
it is greek to me(expression, idiom, knowledge, mind, perception)
0
it remains to be seen(expression, idiom, knowledge, mind, perception)
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APASmart Define. (-0001). i don't know thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/i_don%27t_know/thesaurus/synonyms
ChicagoSmart Define. -0001. "i don't know thesaurus" https://smartdefine.org/i_don%27t_know/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define -0001, i don't know thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/i_don%27t_know/thesaurus/synonyms>.
MLASmart Define. "i don't know thesaurus" 30 November -0001. Web. 28 September 2026. <https://smartdefine.org/i_don%27t_know/thesaurus/synonyms>