Interest is a noun and a verb and, as such, does not have a comparative or a superlative form. If that was interesting, they would be more interesting and most interesting.
The comparative is later, and the superlative is latest
The comparative and superlative to the word cruelly are "more cruel" and "cruellest".
The comparative is truer and the superlative is truest.
comparative: earlier superlative: earliest
Comparative-greener, Superlative-greenest
The superlative is cloudiest; the comparative is cloudier.
Comparative: uglier Superlative: ugliest
What's the comparative and superlative of the word "exact"
comparative = sadder superlative = saddest
The comparative is "stricter" and the superlative is "strictest".
Comparative: shallower Superlative: shallowest
The comparative is "wilder" and the superlative is "wildest".
comparative- smarter superlative- smartest
The comparative is later, and the superlative is latest
shorter (comparative) shortest (superlative)
comparative: trustworthier. superlative: trustworthiest.
fewer - comparative & fewest - superlative