List of Irregular Plurals

Loanwords (eg. mitochondrion) and derived words (eg. woodlouse) are excluded in these lists. Specifically, the word must derive directly from an Old English word (or, in a rare few cases, Old Norse). Loans are excluded due to triviality.

Umlaut

These largely derive from Old English consonant stem nouns. Not all such nouns retained their plurals - for example, the hypothetical pluralizations atch ← oak, beech ← book, gat ← goat, nit ← nut, and tirf ← turf are unattested.

-en

Voicing

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Pluralia Tantum

Misc

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