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  • (North Wales) IPA(key): /muːɨ̯n/
  • (South Wales) IPA(key): /mʊi̯n/

Etymology 1Edit

From Proto-Brythonic *muɨn, from Proto-Celtic *mēnis.


mwyn m (plural mwynau)

  1. ore
  2. mineral
  3. sake as for the sake of
Derived termsEdit

Etymology 2Edit

From Proto-Brythonic *muɨn (beautiful) (compare Breton moan (thin)), from Proto-Celtic *moinis (treasure, precious object) (compare Irish maoin (property, riches)), from Proto-Indo-European *moynis (compare Latin mūnis (obliging), Old English mǣne (common)), from *mey- (to change).


mwyn (feminine singular mwyn, plural mwyn, equative mwyned, comparative mwynach, superlative mwynaf)

  1. mild
  2. gentle, tender
Derived termsEdit


Welsh mutation
radical soft nasal aspirate
mwyn fwyn unchanged unchanged
Note: Some of these forms may be hypothetical. Not every
possible mutated form of every word actually occurs.