Irregular Plural Nouns

Nouns that don't follow regular -s/-es plural rules

beginner

When to Use

•Vowel change plurals: man → men, woman → women, foot → feet, tooth → teeth, goose → geese, mouse → mice.
•-en plurals: child → children, ox → oxen.
•Same singular and plural: sheep, fish, deer, aircraft, series, species.
•Latin/Greek origins: analysis → analyses, crisis → crises, phenomenon → phenomena.
•-f/-fe to -ves: knife → knives, wife → wives, leaf → leaves.

How to Form

Affirmative (+)

Learn each irregular form individually

Negative (-)

Same irregular forms in negative sentences

Question (?)

Same irregular forms in questions

💡 Some words have two acceptable plurals: fish/fishes, indexes/indices.

Examples

✓The children are playing.

✗The childs are playing.

Child → children (irregular).

✓I saw three deer.

✗I saw three deers.

Deer is the same singular and plural.

✓She has two teeth missing.

✗She has two tooths missing.

Tooth → teeth (vowel change).

Common Mistakes

💡 Practice Tips

• Memorize common irregular plurals in groups (vowel changes, -en, same form).
• -f/-fe usually becomes -ves: knife/knives, life/lives, wife/wives.
• Same form: sheep, fish, deer, aircraft, series.
• Latin/Greek: -is → -es (crisis/crises), -on → -a (phenomenon/phenomena).

countable-uncountable articles-definite-indefinite some-any-no 📝 nouns-beginner 📝 irregular-plurals-quiz

Irregular Plural Nouns

Nouns that don't follow regular -s/-es plural rules

beginner

When to Use

•Vowel change plurals: man → men, woman → women, foot → feet, tooth → teeth, goose → geese, mouse → mice.
•-en plurals: child → children, ox → oxen.
•Same singular and plural: sheep, fish, deer, aircraft, series, species.
•Latin/Greek origins: analysis → analyses, crisis → crises, phenomenon → phenomena.
•-f/-fe to -ves: knife → knives, wife → wives, leaf → leaves.

How to Form

Affirmative (+)

Learn each irregular form individually

Negative (-)

Same irregular forms in negative sentences

Question (?)

Same irregular forms in questions

💡 Some words have two acceptable plurals: fish/fishes, indexes/indices.

Examples

✓The children are playing.

✗The childs are playing.

Child → children (irregular).

✓I saw three deer.

✗I saw three deers.

Deer is the same singular and plural.

✓She has two teeth missing.

✗She has two tooths missing.

Tooth → teeth (vowel change).

Common Mistakes

💡 Practice Tips

• Memorize common irregular plurals in groups (vowel changes, -en, same form).
• -f/-fe usually becomes -ves: knife/knives, life/lives, wife/wives.
• Same form: sheep, fish, deer, aircraft, series.
• Latin/Greek: -is → -es (crisis/crises), -on → -a (phenomenon/phenomena).

countable-uncountable articles-definite-indefinite some-any-no 📝 nouns-beginner 📝 irregular-plurals-quiz

Irregular Plural Nouns

When to Use

How to Form

Examples

Common Mistakes

💡 Practice Tips

Related

Irregular Plural Nouns

When to Use

How to Form

Examples

Common Mistakes

💡 Practice Tips

Related

When to Use

How to Form

Examples

Common Mistakes

✗The womans are here.

✗I caught three fishes.

✗The leafs are falling.

💡 Practice Tips

Related

When to Use

How to Form

Examples

Common Mistakes

✗The womans are here.

✗I caught three fishes.

✗The leafs are falling.

💡 Practice Tips

Related