defnyddiol

Welsh

Etymology

From defnydd (“use”) +‎ -iol.

Adjective

defnyddiol (feminine singular defnyddiol, plural defnyddiol, equative mor ddefnyddiol, comparative mwy defnyddiol, superlative mwyaf defnyddiol)

  1. useful, helpful (a book etc.)
  2. (obsolete) material, basic, elementary

Derived terms
  • defnyddioldeb (“usefulness”)

Mutation
Welsh mutation
radical soft nasal aspirate
defnyddiol ddefnyddiol nefnyddiol 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), “defnyddiol”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies
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