I was confused at first what the difference between Ñuha, ñuhe, and ñuhī was, but now I realise that it's just taking the ending of the noun it refers to :)
Sorry this is incorrect. There are actually different endings depending on the case and number. Apparently in conjugates like this: https://wiki.dothraki.org/High_Valyrian_Adjectives#Class_I
So you can have my:
- Nominative: Ñuha (singular), Ñuhi (plural).
- Accusative: Ñuhe (singular), Ñuhii (plural).
Of course, this is only for the lunar class. It ends differently depending which class the noun is in. Hope this helps :)
Yes, it must "agree" with the noun. It must take the appropriate ending, which matches the noun's appropriate ending. Those endings may still be different depending on gender and exceptions