Mutational Plurals

In English, most nouns are pluralised with -s or -es. Some are irregular, like child - children, wolf - wolves or cactus - cacti. Some stay the same, like sheep. However, in all of these cases it is the end of the word, if anything, that changes, while the beginning and middle stay the same. Which English nouns are not like this - in that the middle of the word rather than the end changes for the plural?
Compound words are not included
Both the singular and plural must be guessed.
Not including pronouns.
Quiz by TWM03
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Last updated: August 1, 2018
First submittedAugust 13, 2017
Times taken17
Average score71.4%
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Singular
Plural
Foot
Feet
Goose
Geese
Louse
Lice
Man
Men
Mouse
Mice
Tooth
Teeth
Woman
Women
+1
Level 45
Nov 27, 2020
Ooh interesting quiz!