[[OIcel declension]]
# OIcel ijō-stems

OIcel inherits [[PGmc ī~jō-stems]][^col] (all feminine) with the following paradigm[^norröne]

| case | fem.sg                       | fem.pl                       |
| ---- | ---------------------------- | ---------------------------- |
| nom  | <em class="ling">erm-r</em>  | <em class="ling">erm-ar</em> |
| gen  | <em class="ling">erm-ar</em> | <em class="ling">erm-a</em>  |
| dat  | <em class="ling">erm-i</em>  | <em class="ling">erm-um</em> |
| acc  | <em class="ling">erm-i</em>  | <em class="ling">erm-ar</em> |

[^norröne]: [[@haugenNorroeneGrammatikIm2013|Norröne Grammatik im Überblick: Altisländisch und Altnorwegisch]], §30
[^col]: Three such PGmc nouns actually follow the <em class="recon">-jō</em> paradigm in OIcel.


These are often grouped with the [[OIcel ō-stems]], but deviate strongly from the normal paradigm, with retention of the nominative <em class="ling">-r</em> otherwise only reflected in [[OIcel a-stems]] and with ∅-endings replaced with <em class="ling">-i</em>.

## Subclasses

A handful of stems ending in <em class="recon">-ijo</em> also have <em class="ling">-j-</em> insertion.

| case | fem.sg                         | fem.pl                         |
| ---- | ------------------------------ | ------------------------------ |
| nom  | <em class="ling">gýg-r</em>    | <em class="ling">gýg-j-ar</em> |
| gen  | <em class="ling">gýg-j-ar</em> | <em class="ling">gýg-j-a</em>  |
| dat  | <em class="ling">gýg-i</em>    | <em class="ling">gýg-j-um</em> |
| acc  | <em class="ling">gýg-i</em>    | <em class="ling">gýg-j-ar</em> |


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