The geat were eating nit under the each.

‘Geat’, ‘nit’, ‘each’– this is what the original plural forms of ‘goat’, ‘nut’, and ‘oak’ would’ve looked like if they hadn’t been replaced by ‘goats’, ‘nuts’, and ‘oaks’.

How did plurals with a vowel alternation came to be, such as ‘man ~ men’ and ‘mouse ~ mice’?

What would the lost ones have sounded like if they’d been preserved?

My short video will tell you:
https://youtube.com/shorts/CTjYP8skREc

58: One goat, two geat

YouTube

2/

If you’d like to learn all about this phenomenon – which extends way beyond plurals but has got nothing to do with vowel alternations in verbs, such as ‘ride ~ rode ~ ridden’ – I highly recommend Danny Bate’s article:
https://dannybate.com/2022/03/17/of-mouses-and-mans-the-origins-of-englishs-vowel-swapping-nouns-and-verbs/

Of Mouses and Mans? — The Origins of English’s Vowel-Swapping Nouns and Verbs

Introduction: Nouns, Verbs and Variable Vowels In present-day English, the plural of mouse is usually mice, and one man plus another equals two men. While most English nouns are made plural simply …

Danny L. Bate
@yvanspijk
I wonder why house didn't become "hice" like mouse/mice, louse/lice.
@wahoonie Because its West Germanic ancestor didn't end in -i.

@yvanspijk

Shamanic etymology, language classes improvement.

@skua I'm afraid I don't understand. 😊
@yvanspijk
The drumming evoked images of a circle of students sitting on the ground around a small smokey fire, chanting the developments of singular and plural forms.
@yvanspijk Some in this part of Scotland still say the plural of coo (cow) as kye. Very like Old English.
@yvanspijk
The plural of oak „each“ is very similar to the singular in German: „Eiche“
coincidence or not?

@elnecesario That's indeed a coincidence. In 'each', the <ch> spelling represents a different sound, and it arose in a different way. In German, West Germanic *aik became 'Eiche' because single k became the Ich/Ach-laut regardless of neighbouring sounds, while in English, k only bechame the ch sound of 'cheese' if it was followed or preceded by an i: *aiki > *each.
Compare 'milk', 'to make', 'book' with 'Milch', 'machen', 'Buch'.

(Of course, 'oak' and 'Eiche' do have the same ancestor: *aik.)

@yvanspijk very interesting! Thanks for the explanation :)