defnyddiol

Welsh

Alternative forms

• defnyddol

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.)

   Synonyms: buddiol, llesol, ymarferol, cynorthwyol

2. (obsolete) material, basic, elementary

   Synonyms: sylweddol, elfennol, sylfaenol

Derived terms

• defnyddioldeb (“usefulness”)

Related terms

• defnyddio (“to use”)

Mutation

Mutated forms of defnyddiol

radical	soft	nasal	aspirate
defnyddiol	ddefnyddiol	nefnyddiol	unchanged

Note: Certain mutated forms of some words can never occur in standard Welsh.
All possible mutated forms are displayed for convenience.

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