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1.
Short for addition, usually used after saying "in".
In addish, Chelsea Lately is on TV tonight!
by Milford Cubicles July 26, 2010
 
2.
A confusing blend of English and mumbojumbo usually occurring during late night conversations, and only by those named Adeline Chan.
Although cute at times, Adeline's addish makes for conversation stoppers.
by nganfiction September 01, 2008