Something that is bad; a harm or evil.
(slang, with possessive determiner) Error; mistake.
(countable, uncountable, economics) An item (or kind of item) of merchandise with negative value; an unwanted good. English Wikipedia has an article on:Bad (economics)Wikipedia
Unfavorable; negative; not good.
Not suitable or fitting.
Not appropriate, of manners etc.
Unhealthy; liable to cause health problems.
(chiefly applied to a person's state of health) Sickly, unhealthy, unwell.
(often childish) Not behaving; behaving badly; misbehaving; mischievous or disobedient.
Tricky; stressful; unpleasant.
(sometimes childish) Evil; wicked.
Faulty; not functional.
(of food) Spoiled, rotten, overripe.
(of breath) Malodorous; foul.
False; counterfeit; illegitimate.
Unskilled; of limited ability; not good.
Of poor physical appearance.
(informal) Bold and daring.
(slang) Good, superlative, excellent, cool.
(of a need, want, or pain) Severe, urgent.
(US, slang) Overly promiscuous, licentious.
(originally African-American Vernacular, slang, of a woman) Very attractive; hot, sexy.
(slang, of a draft/check) Not covered by funds on account.
(now colloquial) Badly; poorly.
(intensifier) Badly; severely, extremely, passionately.
Used to scold a misbehaving child or pet.