Hillier is the comparative form of hilly. Hilliest is the superlative form.
Chat with our AI personalities
The comparative form of easy is easier, and the superlative form is easiest.
The comparative form of gloomy is gloomier, the superlative form is gloomiest.
More important is the comparative form, and most important is the superlative form.
More responsible is the comparative form; most responsible is the superlative form.
Younger is the comparative form. Youngest is the superlative form.