Antonym: well. Similar words: deadly, bad, a bad egg, deadline, headline, rapidly, friendly, hardly any. Meaning: ['bædlɪ] 
adv. 1. to a severe or serious degree 2. (`ill' is often used as a combining form) in a poor or improper or unsatisfactory manner; not well 3. evilly or wickedly 4. in a disobedient or naughty way 5. with great intensity (`bad' is a nonstandard variant for `badly') 6. very much; strongly 7. without skill or in a displeasing manner 8. in a disadvantageous way; to someone's disadvantage 9. unfavorably or with disapproval 10. with unusual distress or resentment or regret or emotional display.
adv. 1. to a severe or serious degree 2. (`ill' is often used as a combining form) in a poor or improper or unsatisfactory manner; not well 3. evilly or wickedly 4. in a disobedient or naughty way 5. with great intensity (`bad' is a nonstandard variant for `badly') 6. very much; strongly 7. without skill or in a displeasing manner 8. in a disadvantageous way; to someone's disadvantage 9. unfavorably or with disapproval 10. with unusual distress or resentment or regret or emotional display. 
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241 He has had his fingers burnt by deals that turned out badly.
242 All the horses got over the course, but two of them were badly hurt.
243 Fate played a cruel trick on him when he was badly injured in his first international game.
244 Once soils are puddled badly, it may require several seasons to restore.
245 I would like to know why we pensioners are being so badly treated.
246 The firm's good name was badly tarnished by the scandal.
247 He was affected badly by the barracking that he got from the crowd.
More similar words: deadly, bad, a bad egg, deadline, headline, rapidly, friendly, hardly any, allegedly, supposedly, reportedly, repeatedly, upwardly mobile.