not good in any manner or degree.

having a wicked or evil character; morally reprehensible

There is no such thing as a bad boy.

of poor or inferior quality; defective; deficient

a bad diamond; a bad spark plug.

inadequate or below standard; not satisfactory for use

bad heating; Living conditions in some areas are very bad.

inaccurate, incorrect, or faulty

a bad guess.

invalid, unsound, or false

a bad insurance claim; bad judgment.

causing or liable to cause sickness or ill health; injurious or harmful

Too much sugar is bad for your teeth.

suffering from sickness, ill health, pain, or injury; sick; ill

He felt bad from eating the green apples.

not healthy or in good physical condition; diseased, decayed, or physically weakened

A bad heart kept him out of the army.

tainted, spoiled, or rotten, esp. to the point of being inedible

The meat is bad because you left it out of the refrigerator too long.

having a disastrous or detrimental effect, result, or tendency; unfavorable

The drought is bad for the farmers. His sloppy appearance made a bad impression.

causing or characterized by discomfort, inconvenience, uneasiness, or annoyance; disagreeable; unpleasant

I had a bad flight to Chicago.

easily provoked to anger; irascible

a bad temper.

cross, irritable, or surly

If I don't have my morning coffee, I'm in a bad mood all day.

more uncomfortable, persistent, painful, or dangerous than usual; severe

a bad attack of asthma.

causing or resulting in disaster or severe damage or destruction

a bad flood.

regretful, contrite, dejected, or upset

He felt bad about having to leave the children all alone.

disobedient, naughty, or misbehaving

If you're bad at school, you'll go to bed without supper.

disreputable or dishonorable

He's getting a bad name from changing jobs so often.

displaying a lack of skill, talent, proficiency, or judgment

a bad painting; Bad drivers cause most of the accidents.

causing distress; unfortunate or unfavorable

I'm afraid I have bad news for you.

not suitable or appropriate; disadvantageous or dangerous

It was a bad day for fishing.

inclement; considered too stormy, hot, cold, etc.

We had a bad winter with a lot of snow.

disagreeable or offensive to the senses

a bad odor.

exhibiting a lack of artistic sensitivity

The room was decorated in bad taste.

not in keeping with a standard of behavior or conduct; coarse

bad manners.

(of a word, speech, or writing)

vulgar, obscene, or blasphemous

bad language.

not properly observing rules or customs of grammar, usage, spelling, etc.; incorrect

He speaks bad English.

unattractive, esp. because of a lack of pleasing proportions

She has a bad figure.

(of the complexion) marred by defects; pockmarked or pimply; blemished

bad skin.

not profitable or worth the price paid

The land was a bad buy.

Commerce . deemed uncollectible or irrecoverable and treated as a loss

a bad debt.

ill-spent; wasted

Don't throw good money after bad money.

counterfeit; not genuine

There was a bad ten-dollar bill in with the change.

having the character of a villain; villainous

In the movies the good guys always beat the bad guys.

Sports . failing to land within the in-bounds limits of a court or section of a court; missing the mark; not well aimed.

Slang . outstandingly excellent; first-rate

He's a bad man on drums, and the fans love him.

that which is bad

You have to take the bad with the good.

a bad condition, character, or quality

His health seemed to go from bad to worse.

( used with a plural verb ) evil persons collectively (usually prec. by the )

The bad are always stirring up trouble.

badly

He wanted it bad enough to steal it.

bad off

in poor or distressed condition or circumstances; destitute

His family has been pretty bad off since he lost his job. Also, badly off. Compare well-off

go to the bad

to deteriorate physically or morally; go to ruin

She wept at seeing her son go to the bad.

in a bad way

in severe trouble or distress.

in bad

Informal .

in trouble or distress.

in disfavor

He's in bad with his father-in-law.

my bad

Slang . my fault! my mistake! ?

not bad

tolerably good; not without merit

The dinner wasn't bad, but I've had better.

not difficult

Once you know geometry, trigonometry isn't bad. Also, not so bad, not too bad.

too bad

unfortunate or disappointing

It's too bad that he didn't go to college.

to the bad

in arrears

He's

noun

bad , ill