Category:Old Irish neuter io-stem nouns

Old Irish neuter io-stem nouns.

These nouns are neuter, typically with the following endings:

The stem classes are named from the perspective of Proto-Celtic and may not still be visible in Old Irish inflections. These nouns derive from Proto-Celtic masculine *-ios (masculine) and *-iom (neuter) endings. Originally the endings were the same as that of the o-stems, but later sound changes caused the two classes to diverge significantly.