dad-

Welsh

Alternative forms

• dat-

Etymology

Cognate with Cornish das-.

Pronunciation

• IPA^(key): /dad/

Prefix

dad-

1. undo, un-, dis-

   ‎dad- + ‎pacio (“to pack”) → ‎dadbacio (“to unpack”)

   ‎dad- + ‎gwneud (“to do”) → ‎dad-wneud (“to undo”)

   ‎dad- + ‎llwytho (“to load”) → ‎dadlwytho (“to unload”)

   Synonym: dat-

Derived terms

Welsh terms prefixed with dad-

Mutation

Welsh mutation
radical	soft	nasal	aspirate
dad-	ddad-	nad-	unchanged
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

References

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