1 definition by Rosy K

1. An exclamation and nonstandard spelling of yes , representing informal pronunciation.
2. Used instead of 'I concure' or that's fu..ing awesome!
3. Another way to say G'day
When your friend calls instead of saying hello say Myeah
(MMM-YEAH - sound out the M but give it a short emphasis so it is -MYEAH!)
by Rosy K October 18, 2007
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