Comparatives and Superlatives
How to compare in English: -er and more for comparatives, the -est and most for superlatives, irregular forms, the common mistakes, and a quick exercise.
To compare two things, use a comparative (bigger, more useful) with than. To pick the top of a group, use a superlative (the biggest, the most useful) with the. The main thing to learn is which form a word usually takes — and that depends on length, ending, and a few common exceptions.
Short vs long adjectives
One-syllable adjectives usually take -er / -est. Longer adjectives usually take more / the most. Two-syllable adjectives vary: words ending in -y usually become -ier / -iest, and some common two-syllable adjectives can use either form.
expensive → more expensive → the most expensive
happy → happier → the happiest
simple → simpler / more simple → the simplest / most simple
Watch the spelling when you add -er / -est:
Irregular forms
A few common adjectives don't follow the rules — learn them as they are.
than, the, and (not) as … as
Superlative + the: It's the best day.
Equal: as … as: He's as tall as his brother / not as expensive as I thought.
Common mistakes
Doubling up — "more" + "-er".
✓bigger · the easiest
"that" instead of "than".
✓She's older than me.
Dropping "the" before a superlative. "This is biggest city in the country" → This is the biggest city in the country.
Quick exercise
Write the comparative or superlative.
- This bag is ___ (cheap) than that one.
- It's the ___ (good) film I've ever seen.
- Today is ___ (hot) than yesterday.
- She's the ___ (intelligent) person in the team.
- My new phone is ___ (bad) than my old one.
Answer key
- cheaper
- the best (irregular)
- hotter (double the t)
- the most intelligent (long adjective)
- worse (irregular)
Practice this in Recursio
Comparing is everywhere in real English — and the spelling rules, two-syllable forms, and irregulars are easy to slip on. Recursio's AI Coach drills comparatives and superlatives in natural sentences and the Daily Mixed Review keeps "better", "the best" and "more expensive" coming back until they're automatic.
Practice grammar in Recursio → · Free to start, on iOS and Android.