Unfavorable; negative; not good.
Abducting children is bad for mothers.
Not suitable or fitting.
Do you think it is a bad idea to confront him directly?
Not appropriate, of manners etc.
It is bad manners to talk with your mouth full.
Unhealthy; liable to cause health problems.
Lard is bad for you. Smoking is bad for you, too. Grapes are bad for dogs but not for humans.
Sickly, unhealthy, unwell.
I went to the hospital to see how my grandfather was doing. Unfortunately, he's in a bad state.
Not behaving; behaving badly; misbehaving; mischievous or disobedient.
Stop being bad, or you will get a spanking!
Tricky; stressful; unpleasant.
Divorce is usually a bad experience for everybody involved.
Evil; wicked.
Be careful. There are bad people in the world.
Faulty; not functional.
I had a bad headlight.
(of food) Spoiled, rotten, overripe.
These apples have gone bad.
(of breath) Malodorous; foul.
Bad breath is not pleasant for anyone.
False; counterfeit; illegitimate.
They were caught trying to pass bad coinage.
Unskilled; of limited ability; not good.
He's a bad gardener; everything he tries to grow ends up dying.
Of poor physical appearance.
I don't look bad in this dress, do I?
Bold and daring.
Good, superlative, excellent, cool.
Man, that new car you bought is bad!
(of a need, want, or pain) Severe, urgent.
He is in bad need of a haircut.
Overly promiscuous, licentious.
(of a draft/check) Not covered by funds on account.
He gave me a bad check.
Evil; wicked (of people).
Morally reprehensible (of behaviour etc.); blameworthy.
Indicative of unkind or malevolent intentions; harsh, cruel.
He suffered from ill treatment.
Unpropitious, unkind, faulty, not up to reasonable standard.
ill manners; ill will
Unwell in terms of health or physical condition; sick.
I've been ill with the flu for the past few days.
Having an urge to vomit.
Seeing those pictures made me ill.
(hip-hop slang) Sublime, with the connotation of being so in a singularly creative way.
Extremely bad (bad enough to make one ill). Generally used indirectly with to be.
That band was ill.
Unwise; not a good idea.
Something or someone that is the worst
To make worse.
To grow worse; to deteriorate.
To outdo or defeat, especially in battle.
Superlative of bad
My sore leg hurts worst when it's cold and rainy.
Superlative of ill