noun
dunno
DUH-noh
noun
1
An informal, run-together way of saying "I don't know," used mainly in speech and casual writing.
""Where's the remote?" "Dunno, try the sofa.""
How to Use Dunno
Learner’s notesIn plain EnglishA casual, spoken-style shortcut for "I don't know."
When to use it
Very informal — fine in texting or chat, but avoid it in formal writing or professional emails.
Word Forms
dunnos plural
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"Where's the remote?" "_____, try the sofa."
Etymology
A written spelling of the slurred pronunciation of "don't know."