Taddy is not often used as a baby boy name. It is not in the top 1000 names. In 2012, within the family of boy names directly related to Taddy, Thaddeus was the most frequently used.
Baby names that sound like Taddy include Tadee, Tadey (Russian), Tadi (Albanian), Tadie, Tady, Taewo, Taha (Arabic), Tahey, Tahi, Tahie, Taho (English), Tahoe (English), Tahu, Tahy, Taio, Taiyo (English), Taiyou (Japanese), Tannie (English), Tata (English), and Tau (African).
† Pronunciation for Taddy: T as in "tee (T.IY)" ; AE as in "at (AE.T)" ; D as in "day (D.EY)" ; IY as in "eat (IY.T)"