adjective
(for non-slang definitions) comparative form of bad: more bad
adverb
comparative form of badly (adverb): more badly
Less skillfully.
More severely or seriously.
(sentence adverb) Used to start a sentence describing something that is worse.
noun
(obsolete) Loss; disadvantage; defeat
That which is worse; something less good.
verb
(obsolete, transitive) To make worse; to put at disadvantage; to discomfit.