Comparatives and superlatives

Short adjectives add -er and -est: tall, taller, the tallest. A short vowel before one consonant doubles it: big, bigger; y becomes i: happy, happier.

Long adjectives use more and most: more expensive, the most interesting. Compare with than: she is older than me.

Some are irregular: good, better, best; bad, worse, worst; far, further, furthest. Never double them: more better is wrong.