What is the comparative and superlative form for the word wide?

Comparative - wider

Superlative - widest

Comparative, you add -er to a word with up to two syllables, or you add 'more' if it's 3 syllables or more.

Superlative you add -est to a word with two syllables or less, or you add 'most' to a word if it's 3 syllables or more.