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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181 If he loses the deal, he'll be badly out of pocket.
182 If it weren't for Jeff's quick thinking , Tillie could have been badly hurt.
183 After six defeats in a row, the team's confidence has been badly shaken.
184 I badly wanted the job, but knew that my age would probably tell against me.
185 I could tell from his hangdog look that things had gone badly.
186 When the dog responded so badly to the treatment, we decided to let nature take its course .
187 The refugees are badly off for blankets, and even worse off for food.
188 I've got quite a big room so I'm not too badly off.
189 The team did not play as badly as the scoreline suggests.
190 These children badly need a stable and secure home life.
191 Fans were saddened to see the former champion play so badly.
192 We badly wanted to help, but there was nothing we could do.
193 He's going to be in a very difficult position indeed if things go badly for him.
194 You seem to have cropped up badly on page 11, your acts are wrong.
195 The sculpture was badly mutilated in the late eighteenth century.
196 He's done the job badly but, to be fair[sentencedict.com], I gave him very little time to do it.
197 She was badly affected by the events in her childhood.
198 The first song, "Blue Moon", didn't go too badly except that everyone talked throughout.
199 The lettering on the gravestone was badly worn and almost illegible.
200 It had been a good piano in its time, but it was badly knocked around.
201 She knew she had treated him badly and it weighed heavily on her mind for a long time.
202 Gross's skill in motivation looked in doubt when his side began the second half badly.
203 He has a masochistic streak and seems to enjoy being treated badly by women.
204 He's treated you badly: still, he's your brother and you should help him.
205 To me the whole scheme seems to be badly thought-out.
206 Even when things go badly, try to look on the bright side.
207 Traffic was badly dislocated by the heavy fall of snow.
208 Their theories were badly thought out and very vulnerable to ridicule. Sentencedict.com
209 Peonies react badly to being moved and are best left undisturbed.
210 I'm sure they won't think badly of you if you tell them you need some help.
More similar words: deadly, bad, a bad egg, deadline, headline, rapidly, friendly, hardly any, allegedly, supposedly, reportedly, repeatedly, upwardly mobile.