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”)

Related terms

• defnyddio (“to use”)

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