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Synonyms for Badly (same or very similar meaning)

WordNet sense 1 (in a disobedient or naughty way):
mischievously, naughtily

WordNet sense 2 (with great intensity (`bad' is a nonstandard variant for `badly')):

WordNet sense 3 (to a severe or serious degree):
gravely, seriously, severely

WordNet sense 4 (in a disadvantageous way; to someone's disadvantage):

WordNet sense 5 (unfavorably or with disapproval):

WordNet sense 6 ((`ill' is often used as a combining form) in a poor or improper or unsatisfactory manner; not well):

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