Etymology

duffy

D2U1F4F4Y4

Today it means: A surname from Irish, an anglicization of Ó Dubhthaigh (“descendant of Dubhthach”). Dubhthach is a byname derived from dubh (“black”). Full definition →

Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

From the Irish surname, from Ó Dubhthaigh (literally “descendant of Dubhthach”) and Mac Duibhshíthe (literally “son of Duibhshíth”), from dubh (“black”) + sìth (“peace”), comparable to the surname Duff.

Etymology from Wiktionary, CC BY-SA 4.0.