defeity

Welsh

dafaty (based on the singular dafad (“sheep”))

defaid (“sheep (pl.)”) +‎ tŷ (“house, dwelling”).^[1]

IPA^(key): /dɛˈvei̯tɨ̞/

defeity m (plural defeitai)

Welsh mutation
radical	soft	nasal	aspirate
defeity	ddefeity	nefeity	unchanged
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

^ R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “defeity”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies