yada

The saying Yada Yada made popular by the Seinfeld show probably either originates from the Hebrew word yada "to know" or yadah "to revere or worship with extended hands".

Source: Strongs Concordance, Hebrew and Chaldee Dictionary of the Old Testament. 3034, 3035

All I have to say about that is yada, yada, yada!

by scraammer November 05, 2005