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1.
A different form of the word 'yes'. Much like the less formal 'yea', this word expresses confirmation, but it also expresses approval.

'yea'= yes

'yeya'= yes, I like
Tommy says "man they only have mango colored igloves left, damn"

Sasha says "mango is my favorite color! yeya"

Pronounciation: yeya= yay+u(the u as in 'up')
από MaWabe 22 Δεκέμβριος 2010
 
2.
a Greek grandma who doesn't know how to communicate with words, but can communicate with facial expressions.
My Yeya can't talk in English, but I still love her!
από Kayla Walsh 29 Μάιος 2006