deunaw

Welsh

**Welsh numbers ^(edit)**
^{[a], [b], [c]} ← 17	18	19 → ^{[a], [b], [c]}
Cardinal (feminine / vigesimal): tair ar bymtheg, ugain namyn dwy Cardinal (vigesimal): deunaw Cardinal (decimal): un deg wyth Ordinal (masculine / vigesimal): trydydd ar bymtheg Ordinal: deunawfed Ordinal abbreviation: 18fed
Welsh Wikipedia article on 18

From dau (“two”) +‎ naw (“nine”).

deunaw

(cardinal number, vigesimal) eighteen
Synonym: un deg wyth
(historical) one shilling and sixpence (eighteen pence in British pre-decimal coinage)
Synonym: dwsin a hanner

Mutated forms of *deunaw*
radical	soft	nasal	aspirate
deunaw	ddeunaw	neunaw	unchanged

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

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