Welsh

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Welsh numbers (edit)
120[a], [b], [c]
[a], [b] ←  11 12 13  → [a], [b], [c], [d]
    Cardinal (feminine / decimal): un deg dwy
    Cardinal (masculine / decimal): un deg dau
    Cardinal (vigesimal): deuddeg
    Ordinal: deuddegfed
    Ordinal abbreviation: 12fed

Etymology

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From un (one) +‎ deg (ten) +‎ dwy (two).

Pronunciation

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Numeral

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un deg dwy f

  1. (cardinal number, decimal) feminine of un deg dau
    Synonym: deuddeg

Usage notes

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

Mutation

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Mutated forms of un deg dwy
radical soft nasal h-prothesis
un deg dwy unchanged unchanged hun deg dwy

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