dwy ar bymtheg

Welsh

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

From dwy (“two”) +‎ ar (“on”) +‎ pymtheg (“fifteen”).

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

dwy ar bymtheg f

The vigesimal dwy ar bymtheg can only be used with feminine nouns whereas the synonymous decimal un deg saith can be used with nouns of any gender.

Mutated forms of *dwy ar bymtheg*
radical	soft	nasal	aspirate
dwy ar bymtheg	ddwy ar bymtheg	nwy ar bymtheg	unchanged

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