Etymology

Particle

1. grammatical particle used in conjunction with bod to mark adjectival, nominal, or verbal complements.

Usage notes

• This particle causes the soft mutation in all letters but Rh and Ll in nouns and adjectives following it, but not in verbs.

Preposition

1. in (definite nouns)

   Mae hi'n byw yng Nghaerdydd. - She lives in Cardiff

   Ydyn ni'n astudio yn y Brifysgol ym Mangor - We're studying in the University in Bangor

Usage notes

• This preposition causes the nasal mutation. Before g and c it becomes yng, before p, b and sometimes m it becomes ym. In some areas the spoken language applies a soft mutation rather than a nasal one to the following word, but in written language the nasal is constant.
• Yn is used with definite nouns. Its equivalent for indefinite nouns is .