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English Quiz - Nouns (Irregular Plural) 01 (Questions)

Some nouns don’t add -s or -es to make plurals. This KS3 English quiz explores irregular plurals, including Latin/Greek forms and exceptions you’ll meet in reading and exams.

Explore the Topic →
(quiz starts below)

Fascinating Fact:

Cactus has two plurals, cacti and cactuses, the shop sold five cacti this morning.

In KS3 English, you’ll learn how irregular plurals work. Some change the vowel (mouse → mice), some change the word (child → children), some keep the same form (sheep → sheep), and some keep classical endings (cactus → cacti/cactuses).

Key Terms

  • Irregular plural: A plural that does not follow the usual -s or -es rule (e.g., man → men).
  • Classical plural: A plural borrowed from Latin or Greek (e.g., cactus → cacti, criterion → criteria).
  • Invariant noun: A noun whose singular and plural look the same (e.g., fish, sheep).

Frequently Asked Questions (Click to see answers)

What is an irregular plural in English?

An irregular plural does not simply add -s or -es. Examples include child → children, tooth → teeth, mouse → mice, and sheep → sheep.

Is it correct to say cacti or cactuses?

Both are correct. Cacti follows the Latin pattern; cactuses follows regular English rules. Choose one style and use it consistently in your writing.

How can I spot irregular plurals in KS3 exams?

Look for vowel changes (man → men), different endings (goose → geese), invariant forms (deer), or classical plurals (bacterium → bacteria).

Try These Related Quizzes

1. Find the plural for the following word.
Mouse
[ ] Mice
[ ] Mices
[ ] Mouses
[ ] Mouse's
2. Find the plural for the following word.
Ox
[ ] Oxen
[ ] Oxen's
[ ] Oxes
[ ] Oxs
3. Find the plural for the following word.
Goose
[ ] Geese
[ ] Geeses
[ ] Gooses
[ ] Goose's
4. Find the plural for the following word.
Child
[ ] Children
[ ] Childrens
[ ] Childs
[ ] Child's
5. Find the plural for the following word.
Die (a cube used to play board games)
[ ] Dice
[ ] Dices
[ ] Dice's
[ ] Dies
6. Find the plural for the following word.
Foot
[ ] Feet
[ ] Feets
[ ] Foots
[ ] Foot's
7. Find the plural for the following word.
Tooth
[ ] Teeth
[ ] Teeths
[ ] Tooths
[ ] Tooth's
8. Find the plural for the following word.
Gentleman
[ ] Gentlemans
[ ] Gentleman's
[ ] Gentlemen
[ ] Gentlesmen
9. Find the plural for the following word.
Dormouse
[ ] Dormice
[ ] Dormices
[ ] Dormouses
[ ] Dormouse's
10. Find the plural for the following word.
Woman
[ ] Womans
[ ] Woman's
[ ] Women
[ ] Women's

You can find more about this topic by visiting BBC Bitesize - What is a noun?

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English Quiz - Nouns (Irregular Plural) 01 (Answers)
1. Find the plural for the following word.
Mouse
[x] Mice
[ ] Mices
[ ] Mouses
[ ] Mouse's
"Mouse's" means "belonging to a mouse"!
2. Find the plural for the following word.
Ox
[x] Oxen
[ ] Oxen's
[ ] Oxes
[ ] Oxs
But the plural of "fox" is "foxes"
3. Find the plural for the following word.
Goose
[x] Geese
[ ] Geeses
[ ] Gooses
[ ] Goose's
But "moose" is the same whether singular or plural
4. Find the plural for the following word.
Child
[x] Children
[ ] Childrens
[ ] Childs
[ ] Child's
Not "childs"!
5. Find the plural for the following word.
Die (a cube used to play board games)
[x] Dice
[ ] Dices
[ ] Dice's
[ ] Dies
One cube is a "die" although we usually say "dice" anyway
6. Find the plural for the following word.
Foot
[x] Feet
[ ] Feets
[ ] Foots
[ ] Foot's
Imagine if the plural of "boot" were "beet"! It's "boots", of course!
7. Find the plural for the following word.
Tooth
[x] Teeth
[ ] Teeths
[ ] Tooths
[ ] Tooth's
But the plural of "booth" is "booths"
8. Find the plural for the following word.
Gentleman
[ ] Gentlemans
[ ] Gentleman's
[x] Gentlemen
[ ] Gentlesmen
It's easy to remember this one, because the plural of "man" is "men"
9. Find the plural for the following word.
Dormouse
[x] Dormice
[ ] Dormices
[ ] Dormouses
[ ] Dormouse's
Remember that the plural of "mouse" is "mice"
10. Find the plural for the following word.
Woman
[ ] Womans
[ ] Woman's
[x] Women
[ ] Women's
"Woman's" means "belonging to a woman"
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