What Are Irregular Nouns?

Irregular nouns do not follow the standard rules for forming plurals. Unlike regular nouns, which typically add "s" or "es" to become plural, irregular nouns change their form in various unique ways.

For example, the plural of "child" is "children," and the plural of "mouse" is "mice."

What are Irregular Nouns?

Irregular nouns are nouns that do not follow the regular rules for forming plurals. Instead of simply adding "s" or "es," their plural forms can change in various ways.

Here are a few examples:

  • Child - children

  • Mouse - mice

  • Man - men

  • Tooth - teeth

Common Patterns of Irregular Nouns

Irregular nouns follow specific patterns. Understanding these patterns can help you learn them more easily.

Nouns that change vowels

  • Foot - feet

  • Goose - geese

Nouns that add an ending

  • Child - children

  • Ox - oxen

Nouns that remain the same

  • Sheep - sheep

  • Deer - deer

List of Frequently Used Irregular Nouns

Here are some common irregular nouns you will encounter:

  • Person - people

  • Woman - women

  • Louse - lice

  • Cactus - cacti

  • Radius - radii

Exceptions and tricky cases

  • Fish - fish (or fishes)

  • Fungus - fungi (or funguses)

Tips for Memorizing Irregular Nouns

Memorizing irregular nouns can be challenging, but these tips can help:

Use flashcards and repetition: Create flashcards with singular and plural forms and review them regularly.

Group similar patterns: Group nouns with similar pluralization patterns together to make learning easier.

Create sentences: Use irregular nouns in sentences to practice their correct forms.

For example:

  • "The children are playing in the park."

  • "I saw two mice in the kitchen."

Practice Exercises

To solidify your understanding, try these practice exercises:

Fill-in-the-blank sentences:

  • The ______ (child) are playing outside.

  • I saw three ______ (goose) in the pond.

Matching exercises (singular to plural):

  • Tooth - ______ (teeth)

  • Person - ______ (people)

Short quizzes with immediate feedback: Match the irregular noun pairs:

  • Man - ______ (men)

  • Foot - ______ (feet)