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Definition of dunno from the Oxford Advanced Learner's Dictionary

dunno

 
/dəˈnəʊ/
 
/dəˈnəʊ/
(non-standard)
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  1. a way of writing the informal spoken form of ‘I don’t know’
    More Like This Contractions in non-standard languageContractions in non-standard language
See dunno in the Oxford Advanced American Dictionary
previously
adverb
 
 
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