triarddegfed

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 (vigesimal): (non-standard) triarddegfed     Ordinal (masculine): trydydd ar ddeg     Ordinal (feminine): trydedd ar ddeg     Ordinal abbreviation: 13eg
Welsh Wikipedia article on 13

Alternative forms

• 13fed (abbreviation)

Etymology

From triarddeg (“13”) +‎ -fed (“[-th]”).

Adjective

triarddegfed (feminine singular triarddegfed, plural triarddegfed, not comparable)

1. (ordinal number, nonstandard) thirteenth
   • [1832, William Owen Pughe, A Dictionary of the Welsh Language explained in English: with numerous illustrations from the literary remains and from the living speech of the Cymmry : To which is prefixed a Welsh grammar, Volume 1 (overall work in English), Gee, page 106:

     Absolute numbers.	Numerals.	Ordinals.
     …
     Unarddeg	Unarddegwaith	Unarddegfed
     Deuarddeg	Deuarddegwaith	Deuarddegfed
     Triarddeg	Teirarddegwaith	Triarddegfed

     Absolute numbers.	Numerals.	Ordinals.
     …
     eleven	eleven times	eleventh
     twelve	twelve times	twelfth
     thirteen	thirteen times	thirteenth

     ]

   • 1837, Greal y bedyddwyr neu Ystorfa efenglaidd, page 240:

     Cynnaliwyd triarddegfed gyfarfod blyneddol y Gymdeithas hon yn Paris, dydd Iau, yr 20fed o Ebrill.

     The thirteenth annual meeting this Society was held in Paris on Thursday, the 20th of April.

Mutation

Welsh mutation
radical	soft	nasal	aspirate
triarddegfed	driarddegfed	nhriarddegfed	thriarddegfed
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.