Forming the Dative Case

Masculine: an sabhal mor, anns an t-sabhal mhòr

broad consonant --> slender

Feminine nouns ending in -eag (ea --> ei)

• creag a rock
• air creig on a rock
• a' chreag the rock
• air a' creig on the rock (eag --> eig in the dative)

Feminine nouns ending in -ag (a --> ai)

• lianag a meadow
• air lianaig on a meadow
• an lianag the meadow (lenited L though)
• air an lianaig on the meadow.

-Feminine nouns in the prepositional case: -article a', attenuate, lenite: anns a' ghlumaig -If there's no article then you attenuate but no lenition air glumaig -eag --> eig, e.g. creag --> air a' chreig

-Feminine aich --> ich

• Gainmheach --> anns a' ghainmhich