"Bad" is positive. The corresponding comparative is "worse" and the superlative is "worst".
Longest is the superlative form.
It is the word "bad".
ill- worse- the worst
Comparative: Worse Superlative: Worst
I would have to guess superlative since you cannot exceed always.
Comparative: Worse Superlative: Worst'Worse' I thinkworse, worst
The superlative degree of stout is stoutest.
LOSS is a noun, it does not have degrees of comparison. Maybe LOST: very lost, the most lost (but it is illogical).
Cleanest is the superlative degree of the word clean. Cleaner is the comparative degree
"Fool" is a verb and a noun and, as such, does not have a superlative degree. The superlative degree of the adjective foolish is most foolish.
worst