What’s the meaning of dunno?

“Dunno” is a contraction of “I don’t know.”

Another truncated way to say “I don’t know” is the abbreviation IDK.

Both of these are informal and often used in messages, social media posts, or other places where people want to write as quickly and as little as possible.

If you’d like to communicate “I don’t know” with different words or tone, QuillBot’s free Paraphraser can help.