Unknown; likely a diminutive of Frimet or Fruma
Frimmy is a rare diminutive, most commonly associated with the Yiddish name Frimet or Fruma. These names are derived from the Middle High German word 'vrum', which translates to 'pious' or 'devout'. It is primarily used within Jewish communities as an affectionate nickname rather than a formal given name.
US births per 5-year period, 1990–present (SSA data).