A comparative adjective describes a difference between two people, things, places, or situations. In “This room is quieter than the kitchen,” quieter tells us which place has less noise.
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You can also compare a situation with how it was before: “The weather is getting warmer.” The second part of the comparison is understood, so a comparative does not always need than.
How to form comparative adjectives
Many short adjectives take -er, while longer adjectives usually use more. Spelling and pronunciation affect the choice, and some common adjectives have irregular forms.
| Adjective type | Base form | Comparative | Example |
|---|---|---|---|
| Most one-syllable adjectives | tall | taller | Mia is taller than Leo. |
| Adjectives ending in -e | nice | nicer | The second room is nicer. |
| Some short vowel + consonant endings | big | bigger | We need a bigger bag. |
| Consonant + y endings | easy | easier | This exercise is easier. |
| Most longer adjectives | expensive | more expensive | The blue coat is more expensive. |
| Irregular forms | good / bad | better / worse | My pronunciation is better now. |
For big, double the final consonant before adding -er: bigger. The same pattern gives hotter and thinner, but not every short adjective doubles its last letter: small becomes smaller and new becomes newer.
Two-syllable adjectives need attention
Do not apply a blanket “two syllables means more” rule. Adjectives such as happy, busy, and easy become happier, busier, and easier.
Some other two-syllable adjectives allow an -er form, including simpler and cleverer. Forms such as more simple and more clever are also used. If you are unsure about a particular adjective, check its dictionary entry rather than counting syllables alone.
Irregular comparisons
Learn good → better and bad → worse as complete pairs. For physical distance, both farther and further are possible: “The station is farther/further away than I expected.”
Use further for the meaning “additional”: “Please contact us for further information.” That use does not describe a physical distance.
Building a comparison with than
Use than to introduce the other person or thing in the comparison. Keep the two sides logically parallel: “This year’s course is cheaper than last year’s course.” You can shorten the second noun phrase when its meaning is clear: “This year’s course is cheaper than last year’s.”
“This laptop is lighter than mine” compares two laptops. “This laptop is lighter than me” compares a laptop with a person, which probably is not the intended meaning.
After than, an object pronoun is common in conversation: “Sam is taller than me.” A full clause is also possible: “Sam is taller than I am.” Both forms can express the same comparison.
Showing how big the difference is
Words before the comparative can make the difference stronger or weaker. Use much, far, or a lot for a large difference, and a little or a bit for a small one.
| Meaning | Example |
|---|---|
| Large difference | The train is much faster than the bus. |
| Small difference | This chair is a little more comfortable. |
| A further change | Today is even colder than yesterday. |
| Lower degree of a quality | This route is less dangerous. |
| Equal degree of a quality | This route is as safe as the other one. |
Say “much better,” not “very better.” You can use very with the ordinary adjective, as in “very good,” but it does not normally modify a comparative in this way.
Comparing real choices
Imagine you are choosing between two rooms. Room A costs £70 a night and is near a busy road; Room B costs £85 and faces a garden. These prices belong to this example only.
Guest: Which room is quieter?
Receptionist: Room B is quieter, but it’s more expensive.
Guest: Is it much larger?
Receptionist: No, it’s only a little larger.
The speaker does not repeat than Room A in every sentence because both people know the comparison. This is why short sentences such as “It’s cheaper” are complete in the right context.
Comparative or superlative?
A comparative describes a difference; a superlative identifies an extreme within a group. “Nora is taller than Ben” compares their heights, while “Nora is the tallest student in the class” places her at the top of the whole group.
You can use both forms in one sentence: “This room is larger than the kitchen, but the living room is the largest room in the house.” The important point is that each form serves a clear purpose.
Practice and corrections
Complete the sentences, then check the explanations. For questions with more than one possible answer, choose a form that preserves the intended meaning.
- This puzzle is _____ than the last one. (easy)
- The library is _____ than the café. (quiet)
- My new bag is _____ than my old one. (big)
- Today I feel _____ than yesterday. (good)
- Correct: “The ticket is more cheaper online.”
- Correct: “This explanation is very clearer.”
- Is “It’s getting colder” a complete sentence without than?
- Complete: “This plan is _____ expensive than the first plan.” Use a word that means the price is lower.
Answers and explanations
- Easier. Change consonant + y to -ier.
- Quieter. This common two-syllable adjective takes -er; more quiet is also possible.
- Bigger. Double the final g before adding -er.
- Better. Good has an irregular comparative.
- The ticket is cheaper online. Do not combine more with cheaper.
- This explanation is much clearer. Use much, a lot, or a little to modify the comparative.
- Yes. The comparison is with the earlier temperature.
- Less. Less expensive describes a lower price; cheaper also expresses that meaning with a different adjective.
Choose two objects near you and compare their size, price, or usefulness. Add one sentence about the size of the difference, such as “This one is a little heavier.”
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