Compare adjectives ending in -ing and -ed: boring.

Replacement of genitive case with adjectives ending in -ahi or -ehi, Luwian -assi-.

For adjectives ending in y, change the 'y' to 'i' before adding the 'er' or 'est'.

(These "Greek" nouns can often be identified by their derived adjectives ending in -mático.)

Most adjectives ending in -en, for example material adjectives, have no inflected forms.

For short adjectives ending in a consonant like cold, black, fast, one adds the suffix er to make a comparison of greater magnitude.

Plural forms that are distinguishable from the singular outside of liaison environments occur only with adjectives ending in -al.

Okurigana starts from shi for adjectives ending in -shii (this reflects historical grammar; see above).

"But adjectives ending in ly are another matter: a gravelly-voiced, grizzly-maned statesman of the old school."

Words do not normally end in a geminate stop except in some adjectives ending in a consonant.