bad
Of low quality.
Inaccurate; incorrect
Unfavorable; negative; not good.
Not suitable or fitting.
Not appropriate, of manners etc.
Harmful, especially unhealthy; liable to cause health problems.
(chiefly applied to a person's state of health) Sickly, unhealthy, unwell.
(childish) Not behaving; behaving badly; misbehaving; mischievous or disobedient.
Tricky; stressful; unpleasant.
(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.
(need, want, or pain) Severe, urgent.
Regretful, guilty, or ashamed.
(of a word, speech, or writing) Vulgar, obscene, or blasphemous.
Not worth it.
Bold, daring, and tough.
(slang) Good, superlative, excellent, cool.
(slang) Overly promiscuous, licentious.
(of a woman) Very attractive; hot, sexy.
(sarcastic) {{n-g|Used without a copula to mock people who oppose something without having any real understanding of it.}}
(chiefly in "bad boy", "bad girl", and similar phrases) Attractive due to (one's) rebellious nature.
(colloquial) Badly; poorly.
(intensifier) Badly; severely, extremely, passionately, eagerly.
Something that is bad; a harm or evil.
(with possessive determiner) Error; mistake.
(economics) An item (or kind of item) of merchandise with negative value; an unwanted good. {{wikipedia|Bad (economics)}}
{{n-g|Used to scold a misbehaving child or pet}}.
(archaic) (past). See (bade).
To shell (a walnut).