Purity or virtue
Chassidy is a modern American phonetic spelling of the English name Chastity. It derives from the Latin word 'castitas', which refers to purity, virtue, and moral strength.
Less common today
Chassidy isn't in the latest US Top 1000. It last peaked at #1,532 in 1994.
US births per 5-year period, 1990βpresent (SSA data).