eilfed ar bymtheg

Welsh

**Welsh numbers ^(edit)**
^{[a], [b]} ← 16	17	18 → ^{[a], [b]}
Cardinal (masculine / vigesimal): dau ar bymtheg Cardinal (feminine / vigesimal): dwy ar bymtheg Cardinal (decimal): un deg saith Ordinal: ail ar bymtheg, eilfed ar bymtheg Ordinal abbreviation: 17eg
Welsh Wikipedia article on 17

From eilfed (“second”) +‎ ar (“on”) +‎ pymtheg (“fifteen”).

(North Wales, standard, colloquial) IPA^(key): /ˌei̯lvɛd ar ˈbəmθɛɡ/
- (North Wales, colloquial) IPA^(key): /ˌei̯lvɛd ar ˈbəmθaɡ/
(South Wales) IPA^(key): /ˌei̯lvɛd ar ˈbəmθɛɡ/

eilfed ar bymtheg (feminine singular eilfed ar bymtheg, plural eilfed ar bymtheg, not comparable)

(ordinal number) seventeenth
- 1919 July 25, “Yr Eglwys a'r Piwritan yn nghanol yr Eilfed Ganrif ar Bymtheg [The Church and the Puritan in the middle of the Seventeenth Century]”, in Y Llan, page 6:

Welsh mutation
radical	soft	nasal	h-prothesis
eilfed ar bymtheg	unchanged	unchanged	heilfed ar bymtheg
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.