The name Mitzi is a girl's name of German origin meaning "bitter". Mitzi and is often added to lists like Nicknames for Girls and discussed in our forums with posts like "Heaven, Hell, Purgatory -- Girls Names 900-1000".
From the experts:
Mitzi is a spunky German nickname name that might appeal to parents drawn to the genre of lively vintage chorus girl names that proliferated in 1930's musicals.
Lively entertainer Mitzi Gaynor--who was originally named Francesca Marlene de Czani von Gerber--made the name notable in mid-century America.
You may be surprised to know that Mitzi was on the Top 1000 list through 1979, as high as Number 420 in 1955.