How to abbreviate I don't know?

The ways to abbreviate I don't know.

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IDK:
I don't know(Texting, Internet jargon, Web slang)
For more, try I DON'T KNOW on ALL ACRONYMS DICTIONARY
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APASmart Define. (2018). i don't know. Retrieved September 28, 2026, from http://smartdefine.org/i_don%27t_know/abbreviations/a/Text_messaging
ChicagoSmart Define. 2018. "i don't know" http://smartdefine.org/i_don%27t_know/abbreviations/a/Text_messaging (accessed September 28, 2026).
HarvardSmart Define 2018, i don't know, Smart Define, viewed 28 September, 2026, <http://smartdefine.org/i_don%27t_know/abbreviations/a/Text_messaging>.
MLASmart Define. "i don't know" 7 February 2018. Web. 28 September 2026. <http://smartdefine.org/i_don%27t_know/abbreviations/a/Text_messaging>