defnydd

From Proto-Celtic *damniyom. Cognate with Irish damhna.

• (North Wales) IPA^(key): /ˈdɛvnɨ̞ð/
• (South Wales) IPA^(key): /ˈdɛvnɪð/

defnydd m (plural defnyddiau)

1. material, stuff; matter, substance, essence; element, constituent part, particle; make-up, nature
2. matter (for discussion), question, subject matter; work (written or published); content (of book, speech, etc.)
3. (law) requisites
4. implement, instrument, gear; part, accessory
5. use, service; application; purpose, end, effect
6. cause, occasion, reason; origin
7. (future) form or status

When referring to physical "material" such as "fabric" or "cloth", the word defnydd tends to be used. deunydd, on the other hand, usually refers to other kinds of material sych as deunydd dysgu "learning material".

• defnydd-deb (“economic utility”)
• defnyddio (“to use”)
• defnyddiol (“useful”)
• defnyddiwr (“user, consumer”)

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