Adjectives as Nouns Practice Tests with B2 Grammar Rules & Examples

Adjectives as Nouns

In English, we sometimes use adjectives without a noun after them. When we do this, the adjective acts like a noun — it refers to a group of people or an abstract idea. This is called using adjectives as nouns.

For example, instead of saying "the poor people", we can simply say "the poor". The adjective poor becomes the noun and refers to all poor people in general.

Understanding how to use adjectives as nouns will help you read academic texts, news articles, and literature more easily — and express complex ideas more fluently in your own writing and speaking.

Rule Breakdown: How Adjectives as Nouns Work

To use an adjective as a noun, we follow a simple pattern:

the + adjective = a group of people or an abstract concept

This structure is very common in formal English, news reports, political speech, and academic writing. Let us look at the two main ways adjectives are used as nouns.

1. Adjectives as Nouns Referring to Groups of People

When we place the before an adjective, we can refer to an entire group of people who share that quality. These expressions are always treated as plural — they describe many people, not just one.

the + adjective → refers to a group of people (plural meaning)
Example: the rich = rich people in general
Example: the elderly = elderly people in general
Example: the unemployed = people who are unemployed

Notice that we do not add -s to the adjective. We say "the poor", not "the poors".

Grammar Note: Plural Verb

Because these expressions refer to groups of people, they always take a plural verb.

the poor + ARE (not is)
the elderly + NEED (not needs)

❌ The homeless is a serious social problem.
✅ The homeless are a serious social problem.

❌ The rich has too many advantages.
✅ The rich have too many advantages.

2. Adjectives as Nouns Referring to Abstract Ideas

We also use adjectives as nouns to refer to abstract concepts — ideas, qualities, or states rather than people. These expressions are treated as singular.

the + adjective → refers to an abstract idea (singular meaning)
Example: the unknown = things that are unknown
Example: the obvious = the thing that is obvious
Example: the unexpected = something unexpected

Grammar Note: Singular Verb

When an adjective used as a noun refers to an abstract concept (not a group of people), it takes a singular verb.

the unexpected + IS (not are)
the impossible + SEEMS (not seem)

❌ The unknown frighten many people.
✅ The unknown frightens many people.

3. Nationality Adjectives as Nouns

We can also use nationality adjectives as nouns to refer to the people of a particular country. These work in the same way as other adjectives used as nouns — they take the and a plural verb. However, they follow specific spelling patterns.

Pattern A: Adjectives ending in -sh, -ch, -ese, -ss

These adjectives do not change. They stay the same when used as nouns.

Pattern B: Adjectives that add -s to form a noun

Some nationality adjectives do add -s when used as a plural noun, but in this case they are technically used as nouns themselves (e.g. Germans, Italians). When used with the as an adjective-noun, they still refer to the people as a group.

Important Differences and Special Cases

Adjective as Noun vs Adjective + Noun

It is important to understand the difference between using an adjective alone as a noun (general, referring to all) and using an adjective with a noun (specific, referring to one or a few).

Cannot Refer to a Single Person

When you use the + adjective to refer to people, it always means a group. You cannot use this structure to refer to just one person.

❌ The injured was taken to hospital. (sounds like one person — incorrect)
✅ The injured were taken to hospital. (a group of injured people)
✅ An injured man was taken to hospital. (one specific person)

Not All Adjectives Work This Way

Only a limited number of adjectives are commonly used as nouns in standard English. You cannot do this freely with any adjective. For example, we do not say:

❌ The talls wear different clothes. (tall people)
✅ Tall people wear different clothes.

❌ The happys are lucky.
✅ Happy people are lucky.

Stick to well-established expressions such as the rich, the poor, the elderly, the blind, the unknown, the unexpected, and the nationality adjectives listed above.

Possessive Forms

Because adjectives used as nouns refer to groups, they do not have a simple possessive form. Instead, use a phrase with of.

❌ The poor's situation is getting worse.
✅ The situation of the poor is getting worse.

❌ The homeless's needs are often ignored.
✅ The needs of the homeless are often ignored.

Common Mistakes

❌ The sick needs better care from the government.
✅ The sick need better care from the government. (Use a plural verb with adjectives as nouns referring to people.)

❌ The poors are suffering during the economic crisis.
✅ The poor are suffering during the economic crisis. (Never add -s to the adjective.)

❌ She helped a homeless last winter.
✅ She helped a homeless man last winter. (Use adjective + noun when referring to one specific person.)

❌ The unexpecteds always surprise us.
✅ The unexpected always surprises us. (Abstract adjective nouns are singular and take no -s.)

❌ The elderly is often undervalued in modern society.
✅ The elderly are often undervalued in modern society. (Plural verb is required.)

❌ This policy will benefit the poor's children.
✅ This policy will benefit the children of the poor. (Use of instead of a possessive apostrophe.)

❌ The French is famous for its food.
✅ The French are famous for their food. (Plural verb and plural pronoun required.)

Adjectives as Nouns: Quick Summary

Here is a summary of everything you have learned about using adjectives as nouns in English:

• Use the + adjective to refer to a group of people who share a quality: the rich, the poor, the elderly, the blind.
• These expressions always take a plural verb: The homeless are in need of support.
• Never add -s to the adjective: say the young, not the youngs.
• Use the + adjective to refer to abstract ideas: the unknown, the unexpected, the impossible. These take a singular verb.
• Nationality adjectives can also be used as nouns: the British, the French, the Germans, the Italians.
• To refer to one specific person, use adjective + noun: a blind woman, an elderly man.
• To show possession, use of: the needs of the poor (not the poor's needs).
• Not all adjectives can be used as nouns — only well-established ones are accepted in standard English.

Now practise adjectives as nouns in the exercises below.