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Definition of yo exclamation from the Oxford Advanced Learner's Dictionary

yo

exclamation
 
/jəʊ/
 
/jəʊ/
(slang)
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  1. used by young people to say hello
    Word Originnatural exclamation: first recorded in late Middle English.
See yo in the Oxford Advanced American Dictionary
ripple effect
noun
 
 
From the Topic
Change, cause and effect
C2
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