Modern invented name, likely a variant of Kennedy
Kynadie is a contemporary American invention, most likely created as a creative phonetic spelling of the Irish surname Kennedy. Kennedy is derived from the Gaelic 'CinnΓ©idigh', which traditionally translates to 'misshapen head' or 'helmeted head'.
Less common today
Kynadie isn't in the latest US Top 1000. It last peaked at #10,411 in 2010.
US births per 5-year period, 1990βpresent (SSA data).