[*] 318. Comparison by -ι_ων, -ιστος.—Some adjectives add to the root of the positive the endings -ι_ων for the masculine and feminine, -ι_ον for the neuter to form the comparative, and -ιστος -η -ον to form the superlative. The vowel (or the syllable ρο) standing before ς of the nominative is thus lost.
| POSITIVE | COMPARATIVE | SUPERLATIVE |
| ἡδ-ύ-ς sweet (ἡ ἡδ-ονή pleasure） | ἡδ-ί_ων | ἥδ-ιστος |
| ταχ-ύ-ς swift (τὸ τάχ-ος swiftness） | θά_ττων (112, 125 f) | τάχ-ιστος |
| μέγ-α-ς great (τὸ μέγ-εθος greatness） | μείζων (116） | μέγ-ιστος |
| ἀλγεινός painful (τὸ ἄλγ-ος pain） | ἀλγ-ί_ων | ἄλγ-ιστος |
| αἰσχ-ρό-ς shameful (τὸ αἶσχ-ος shame） | αἰσχ-ί_ων | αἴσχ-ιστος |
| ἐχθ-ρό-ς hateful, hostile (τὸ ἔχθ-ος hate） | ἐχθ-ί_ων | ἔχθ-ιστος |