eng6-4.2· Unit 4: Comparisons· ~13 min

Superlative adjectives

The most / the -est of all.

We use superlative adjectives to say which person, place or thing has the most of a quality — comparing three or more items in a group. For short adjectives (one syllable), we add -est and put the before it: tall → the tallest, old → the oldest. If the adjective ends in a consonant + vowel + consonant, we double the final consonant: big → the biggest, hot → the hottest. For adjectives ending in -y, change y to i and add -est: happy → the happiest. For longer adjectives (two or more syllables), we use the most + adjective: beautiful → the most beautiful, expensive → the most expensive. Two important irregular forms must be memorised: good → the best, bad → the worst. We always use a superlative when comparing three or more things, and we often follow it with in (the tallest student in the class) or of (the worst day of the week). Never use most and -est together. For example: 'Mount Everest is the highest mountain in the world, and the Sahara is the most dangerous desert to cross.'

Key terms

superlative adjectiveA form of an adjective that shows the highest or lowest degree of a quality in a group of three or more — for example, 'the tallest', 'the most beautiful'.
comparative adjectiveA form of an adjective used to compare exactly two things — for example, 'taller', 'more beautiful'. Do NOT use a comparative when comparing three or more things.
irregular adjectiveAn adjective whose comparative and superlative forms do not follow the normal rules and must be memorised — for example, good → better → the best; bad → worse → the worst.
CVC ruleWhen a one-syllable adjective ends in consonant–vowel–consonant (e.g. b-i-g, h-o-t), double the final consonant before adding -est: big → the biggest, hot → the hottest.
the most + adjectiveThe superlative pattern for long adjectives (two or more syllables that do not end in -y) — for example, the most beautiful, the most expensive, the most interesting.
article 'the' in superlativesThe word 'the' is always required before a superlative adjective. You cannot say 'tallest' or 'most beautiful' without 'the'.
Superlative adjective formation rules
Adjective typeRuleBase formSuperlative
Short (1 syllable, normal ending)add -esttallthe tallest
Short (1 syllable, normal ending)add -estoldthe oldest
Short (1 syllable, normal ending)add -estcheapthe cheapest
Short ending in -eadd -d onlylargethe largest
Short CVC (consonant–vowel–consonant)double final consonant + -estbigthe biggest
Short CVC (consonant–vowel–consonant)double final consonant + -esthotthe hottest
Ends in consonant + ychange y → i, add -esthappythe happiest
Ends in consonant + ychange y → i, add -estheavythe heaviest
Long (2+ syllables, not -y)the most + adjectivebeautifulthe most beautiful
Long (2+ syllables, not -y)the most + adjectiveexpensivethe most expensive
Long (2+ syllables, not -y)the most + adjectiveinterestingthe most interesting
Irregularmemorise — no rulegoodthe best
Irregularmemorise — no rulebadthe worst

Always put 'the' before every superlative. Never use 'most' and -est together on the same adjective.

Comparative vs. superlative — when to use each
SituationForm to useExample
Comparing exactly 2 thingscomparative (-er / more …)Baku is bigger than my hometown.
Comparing 3 or more thingssuperlative (the -est / the most …)Istanbul is the biggest city in the region.
'good' — comparing 2 thingsbetter (irregular comparative)Nigar did better than Fuad.
'good' — comparing 3+ thingsthe best (irregular superlative)Murad did the best of all.
'bad' — comparing 2 thingsworse (irregular comparative)Monday was worse than Tuesday.
'bad' — comparing 3+ thingsthe worst (irregular superlative)Monday was the worst day of the week.

Count the items being compared: 2 items → comparative; 3 or more → superlative.

Common double-superlative errors to avoid
Wrong formWhy it is wrongCorrect form
the most tallestNever use 'most' AND -est on the same adjectivethe tallest
the most hardestNever use 'most' AND -est on the same adjectivethe hardest
most longestNever use 'most' AND -est on the same adjectivethe longest
the most funniestNever use 'most' AND -est on the same adjectivethe funniest
the goodest'Good' is irregular — does not take -estthe best
the baddest'Bad' is irregular — does not take -estthe worst
the most good'Good' is irregular — does not use 'most'the best
the most bad'Bad' is irregular — does not use 'most'the worst

A superlative adjective can only have ONE superlative marker: either -est OR the most — never both.

How to form the superlative of 'hot' (CVC rule)
  1. 1Step 1: identify the adjective type: hot → one syllable, ends in consonant–vowel–consonant (h – o – t). The CVC rule applies.
  2. 2Step 2: double the final consonant: hot → hott (double the t)
  3. 3Step 3: add -est: hott + est → hottest
  4. 4Step 4: add the article 'the': the hottest
  5. 5Step 5: use in a sentence: July is the hottest month of the year in Azerbaijan.
How to choose between comparative and superlative
  1. 1Step 1: count the items: Read the sentence. How many things are being compared? — 'Baku is ___ than my hometown' = 2 cities. 'Istanbul is ___ city in the region' = many cities.
  2. 2Step 2: 2 items → comparative: 'Baku is bigger than my hometown.' (2 cities → bigger, not the biggest)
  3. 3Step 3: 3 or more items → superlative: 'Istanbul is the biggest city in the region.' (many cities → the biggest, not bigger)
  4. 4Note: Look for clue words: 'of all', 'in the class', 'in the world', 'of the three/four/…' all signal a superlative is needed.
🚫Common mistake

Do NOT use 'the most' with a short (one-syllable) adjective. Students often write 'the most tall', 'the most long', or 'the most big'. These are wrong. Short adjectives take -est: the tallest, the longest, the biggest.

🚫Common mistake

Do NOT forget 'the' before a superlative. Writing 'tallest' or 'cheapest' without 'the' in front is a very common error. The article 'the' is always required: the tallest, the cheapest, the most expensive.

🚫Common mistake

Do NOT combine 'most' and -est on the same adjective. Forms like 'the most tallest', 'the most hardest', and 'the most funniest' are always wrong. Choose one superlative marker only: either the + -est OR the most.

⚠️Caution

The adjectives 'good' and 'bad' are irregular. Their superlatives must be memorised: good → the best, bad → the worst. Never say 'the goodest', 'the most good', 'the baddest', or 'the most bad'.

💡Note

When you see 'of all', 'in the class', 'in the world', or 'of the [number]' in a sentence, a superlative is almost always needed, not a comparative. For example: 'She is the smartest student in the class' (not 'smarter').

Rules

  1. 1Short adjectives (1 syllable): add -est and use the — tall → the tallest, old → the oldest.
  2. 2Double the final consonant when the pattern is consonant–vowel–consonant: big → the biggest, hot → the hottest.
  3. 3Adjectives ending in -y: change y to i, then add -est — happy → the happiest, easy → the easiest.
  4. 4Long adjectives (2+ syllables, not ending in -y): use the most + adjective — the most beautiful, the most expensive.
  5. 5Irregular forms must be memorised: good → the best; bad → the worst. Never mix more/most with -er/-est.

Practice

10 easy · 10 medium · 10 hard

10 random questions per test