dau ar bymtheg

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Welsh cardinal numbers
 <  16 17 18  > 
    Cardinal : dau ar bymtheg
    Ordinal : ail ar bymtheg
    Decimal : un deg saith


From dau (two) +‎ ar (on) +‎ pymtheg (fifteen).



dau ar bymtheg m (feminine form dwy ar bymtheg)

  1. (vigesimal) seventeen
    Synonym: un deg saith

Usage notes[edit]

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


Welsh mutation
radical soft nasal aspirate
dau ar bymtheg ddau ar bymtheg nau ar bymtheg unchanged
Note: Some of these forms may be hypothetical. Not every
possible mutated form of every word actually occurs.