Duffy

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.

• enPR: dŭʹfē, IPA^(key): /ˈdʌfi/
• Rhymes: -ʌfi

Duffy (countable and uncountable, plural Duffys)

1. A surname from Irish, an anglicization of Ó Dubhthaigh (“descendant of Dubhthach”). Dubhthach is a byname derived from dubh (“black”).
2. A surname from Irish, an anglicization of Ó Doithe.
3. A Scottish surname from Scottish Gaelic [in turn originating as a patronymic], an alternate anglicization of Mac Dhuibhshíthe (McPhee).
4. A suburb of Canberra, Australia; named for Charles Gavan Duffy, 8th Premier of Victoria.
5. An unincorporated community in West Virginia, United States.

• (Irish surname from Ó Dubhthaigh): O'Duffy, Duffey, Duhy, Duhig, Dowey, Douey, Dooey, Doey

• Duffy antigen