dwy-

See also: dwy

Welsh

Etymology

From Proto-Celtic *dwī (feminine of *duwo), from Proto-Indo-European *dw-ih₂, feminine of *dwóh₁. Corresponds to dwy f (“two”).

Pronunciation

Prefix

dwy-

  1. two-, bi-, di-, duo-
    Synonym: deu-
    ‎dwy- + ‎gwaith (“time”) → ‎dwywaith (“twice”)
    ‎dwy- + ‎awr (“hour”) → ‎dwyawr (“(a period of) two hours”)
    ‎dwy- + ‎ffordd (“way”) → ‎dwyffordd (“reversible”)
    ‎dwy- + ‎iaith (“language”) + ‎-og → ‎dwyieithog (“bilingual”)
    ‎dwy- + ‎llaw (“hand”) → ‎dwylo (“hands”)

Usage notes
  • Used to form compounds with feminine nouns, the corresponding masculine suffix being deu-

Derived terms
Welsh terms prefixed with dwy-

Mutation
Welsh mutation
radical soft nasal aspirate
dwy- ddwy- nwy- 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), “dwy-”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies
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