tair ar ddeg

Welsh

Welsh numbers ^(edit)

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

Etymology

From tair (“three”) +‎ ar (“on”) +‎ deg (“ten”).

Pronunciation

• IPA^(key): /ˌtai̯r ar ˈðeːɡ/

Numeral

tair ar ddeg f

1. (cardinal number, vigesimal) feminine of tri ar ddeg

   Synonym: un deg tair

Mutation

Welsh mutation
radical	soft	nasal	aspirate
tair ar ddeg	dair ar ddeg	nhair ar ddeg	thair ar ddeg
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.