Family name origins & meanings
- English : from a Middle English personal name, Derman (Old English Dēormann), meaning either ‘beloved man’ or ‘spirited man’ (from dēor ‘wild creature’). See Dear 1.
- Variant of Irish Dearmond.
- Probably an Americanized spelling of German Diermann or Thiermann, which derive from short forms of the personal name Dietrich or perhaps from Middle High German tier ‘animal’, ‘game’ + man ‘man’ and thus denote a game or venison dealer.