Badly is an adverb, the adjective is bad. - worse, the worst
The comparative form of rude is ruder, and the superlative form is rudest. It is common to form the comparative and superlative of short words like this by adding -er and -est.
The comparative form of risky is riskier, and the superlative form is riskiest. The word risky is short enough to form the comparative and superlative forms this way. For longer words, you would need to precede the word with more (for comparative) and most (for superlative).
comparative - merrier superlative - merriest
I believe for words such as foolish you need to use more and most. Comparative: More Foolish Superlative: Most Foolish
comparative = tenderer superlative = tenderest
more badly, most badly
badly, worse, worst
worse, worst
worse and worst.
worse and worst
"Higher" is the comparative of high. The superlative is highest.
more badly, most badly
'Next' is a superlative; it means 'nearest'. The positive is therefore 'near' and the comparative is 'nearer'.
last
harmful
finer, finest
older, oldest