trydedd ar ddeg

Welsh

**Welsh numbers ^(edit)**
← 12	13	14 → ^{[a], [b]}
Cardinal (masculine / decimal): un deg tri Cardinal (feminine / decimal): un deg tair Cardinal (masculine / vigesimal): tri ar ddeg Cardinal (feminine / vigesimal): tair ar ddeg Ordinal (feminine): trydedd ar ddeg Ordinal (masculine): trydydd ar ddeg Ordinal (vigesimal): (non-standard) triarddegfed Ordinal abbreviation: 13eg
Welsh Wikipedia article on 13

(North Wales) IPA^(key): /ˌtrədɛð ar ˈðeːɡ/
(South Wales, standard, colloquial) IPA^(key): /ˌtrədɛð ar ˈðeːɡ/
- (South Wales, colloquial) IPA^(key): /ˌtrɪdɛð ar ˈðeːɡ/

Welsh mutation
radical	soft	nasal	aspirate
trydedd ar ddeg	drydedd ar ddeg	nhrydedd ar ddeg	thrydedd ar ddeg
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.