Hindidk 2021 [new] -
Thus, loosely translates to a user-generated expression meaning: "I don't know Hindi (or how to articulate this in Hindi) in the context of 2021." This phrase became a meme, a social media caption, and a linguistic crutch used predominantly by Gen Z and Millennial users who are more comfortable with Hinglish (a hybrid of Hindi and English) than with pure, formal Hindi.
Option 2: Informational/Update (Best for Telegram/Community Groups) hindidk 2021
If you were looking for a translation or the meaning of "Don't Know" in Hindi for the year 2021: a social media caption
परीक्षाओं में बार-बार पूछे जाने वाले हिंदी मुहावरे और लोकोक्तियाँ। hindidk 2021