1. In a disadvantageous way; to someone's disadvantage; SYN. disadvantageously.
2. Without skill or in a displeasing manner; SYN. poorly, incompetently.
3. Evilly or wickedly.
4. In a disobedient or naughty way; SYN. mischievously, naughtily.
5. To a severe or serious degree; SYN. severely, gravely, seriously.
6. Very much; strongly; SYN. bad.
7. With great intensity; ('bad' is a nonstandard variant for 'badly' as in or); SYN. bad.
8. With unusual distress or resentment or regret or emotional display.
De mauvaise manière. Aller mal.