Question

comparative and superlative degree of clean ​

Answer 1

Explanation:

For adjectives with two syllables we generally use 'more' or 'most'. But some two syllable adjectives can take 'er' or 'est'. It's also fine to use 'more' (for the comparative) or 'most' (for the superlative).

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Answer 2

Comparative degree - Cleaner.

Superlative degree - Cleanest.