English grammar references - Comparatives and superlatives of adjectives: Speakspeak

Comparative and superlative of adjectives
	Adjective	Comparative	Superlative
One-syllable adjectives	old long	older longer	the oldest the longest
Adjectives ending in one vowel and one consonant	big hot	bigger hotter	the biggest the hottest
Adjectives ending in -y	ugly noisy	uglier noisier	the ugliest the noisiest
Adjectives with two or more syllables	expensive beautiful	more expensive more beautiful	the most expensive the most beautiful