Fate or fortune
A modern phonetic spelling of the English word 'destiny', which refers to a predetermined course of events. It ultimately derives from the Latin 'destinare', meaning to make firm or establish.
Less common today
Deztiny isn't in the latest US Top 1000. It last peaked at #5,547 in 2001.
US births per 5-year period, 1990βpresent (SSA data).