The comparative is formed by adding er to the positive, if it end with a consonant; or the letter r, if it end with a vowel; as, soft, softer; safe, safer.

The superlative is formed by adding est, or st, as, soft, softest; safe, safest[36].

Some adjectives are compared irregularly, as,

Pos.Comp.Super.
GoodBetterBest
Bad or EvilWorseWorst
LittleLessLeast
MuchMoreMost
ManyMoreMost
NearNearerNearest or next
LateLaterLatest or last.

The comparative degree is frequently expressed by the word more, and the superlative by most, as,

Pos.Comp.Super.
HardMore hardMost hard.

Monosyllabic adjectives are generally compared by annexing r or er, st or est; adjectives of two or more syllables by more and most, as, strong, stronger, strongest; certain, more certain, most certain.

Dissyllabic adjectives in y form an exception to this rule, as happy, happier, happiest.

Adjectives of two syllables ending in le, after a mute, are also excepted, as, able, abler, ablest.