adverb (r)

• to a severe or serious degree(adv.all)

  Example:
  Fingers so badly frozen they had to be amputated.
  Badly injured.
  

  Synonym:
  gravely, seriously, severely
  

  source: wordnet30
• (`ill' is often used as a combining form) in a poor or improper or unsatisfactory manner; not well(adv.all)

  Example:
  The car runs badly.
  He performed badly on the exam.
  

  Synonym:
  ill, poorly
  Antonym:
  good, well
  

  source: wordnet30
• evilly or wickedly(adv.all)

  Example:
  Treated his parents badly.
  To steal is to act badly.
  

  source: wordnet30
• in a disobedient or naughty way(adv.all)

  Example:
  He behaved badly in school.
  

  Synonym:
  mischievously, naughtily
  

  source: wordnet30
• with great intensity (`bad' is a nonstandard variant for `badly')(adv.all)

  Example:
  The injury hurt badly.
  The buildings were badly shaken.
  

  Synonym:
  bad
  

  source: wordnet30
• very much; strongly(adv.all)

  Example:
  I wanted it badly enough to work hard for it.
  The cables had sagged badly.
  They were badly in need of help.
  

  source: wordnet30
• without skill or in a displeasing manner(adv.all)

  Example:
  She writes badly.
  I think he paints very badly.
  

  source: wordnet30
• in a disadvantageous way; to someone's disadvantage(adv.all)

  Example:
  The venture turned out badly for the investors.
  

  Synonym:
  disadvantageously
  Antonym:
  advantageously, well
  

  source: wordnet30
• unfavorably or with disapproval(adv.all)

  Example:
  Thought badly of him for his lack of concern.
  

  Synonym:
  ill
  

  source: wordnet30
• with unusual distress or resentment or regret or emotional display(adv.all)

  Example:
  They took their defeat badly.
  Took her father's death badly.
  Conducted himself very badly at the time of the earthquake.
  

  Antonym:
  well
  

  source: wordnet30
• In a bad manner; poorly; not well; unskillfully; imperfectly; unfortunately; grievously; so as to cause harm; disagreeably; seriously.(adverb)

  source: webster1913