dunno

dun·​no
də-ˈnō
informal
used in writing to represent the sound of the phrase (I) don't know when it is spoken quickly
"What I wanted to ask about," Roy said, "is you and your mom. Whatʼs the deal?" "I dunno. We just never connected," the boy said matter-of-factly.Carl Hiassen, Hoot, 2002
"Whatʼre those things?" whispered Ron. "Dunno," said Harry.J. K. Rowling, Harry Potter and the Order of the Phoenix, 2003

Word History

First Known Use

1842, in the meaning defined above

Time Traveler
The first known use of dunno was in 1842

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near dunno

Cite this Entry

“Dunno.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dunno. Accessed 2 Mar. 2024.

More from Merriam-Webster on dunno

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!