Definitions for badness

Random House Webster's College Dictionary

bad^*bæd(adj.)worse, worst; bad•der; bad•dest

(adj.)not good in any manner or degree.
having a wicked or evil character; morally reprehensible.
of inferior quality; inadequate; defective; deficient.
disobedient or naughty.
inaccurate or faulty:
a bad guess.
invalid or false:
bad judgment.
injurious or harmful:
Too much sugar is bad for your teeth.
suffering from sickness, pain, or injury.
diseased, decayed, or physically weakened:
a bad heart.
tainted, spoiled, or rotten.
having a detrimental effect, result, or tendency; unfavorable.
disagreeable; unpleasant:
a bad night.
easily provoked to anger; irascible:
a bad temper.
severe:
a bad flood.
regretful or upset:
He felt bad about leaving.
disreputable or dishonorable:
a bad name.
displaying a lack of skill or competence.
unfortunate or unfavorable:
bad news.
inclement, as weather.
disagreeable or offensive to the senses:
a bad odor.
lacking aesthetic sensitivity:
bad taste.
not in keeping with a standard of behavior; coarse:
bad manners.
vulgar, obscene, or blasphemous: not observing rules or customs of grammar, usage, spelling, etc.:
a bad word.
bad English.
Category: Language/Linguistics
marred by defects; blemished:
bad skin.
not profitable or worth the price paid:
The land was a bad buy.
(of a debt) deemed uncollectible and treated as a loss.
Category: Business
counterfeit; not genuine.
Slang. outstandingly excellent; first-rate:
He is one bad drummer.
Category: Status (usage)
(n.)that which is bad:
You have to take the bad with the good.
a bad condition, character, or quality.
(adv.)badly:
She wanted it bad enough to steal it.

Idioms for bad:

bad or badly off,poor; destitute.
Category: Idiom
in bad, Informal. in trouble or distress. in disfavor.
Category: Informal
my bad,Slang.my fault! my mistake!
Category: Status (usage)
not (half, so, or too) bad,somewhat good; tolerable.
Category: Idiom
too bad,unfortunate or disappointing.
Category: Idiom

^* for 36 . Usage: The adjective bad meaning “unpleasant, unattractive, spoiled, etc.,” is the usual form to follow such copulative verbs as sound, smell, look, and taste: After the rainstorm the water tasted bad. The locker room smells bad. After the copulative verb feel, the adjective badly in reference to physical or emotional states is also used and is standard, although bad is more common in formal writing. bad as an adverb appears mainly in informal contexts. See also badly,good.

Origin of bad:

1250–1300; ME badde

bad′ness(n.)

bad^*bæd(v.)

Ref: a pt. of bid . 1 1

^* Archaic..

Princeton's WordNet

bad, badness(noun)
that which is below standard or expectations as of ethics or decency
"take the bad with the good"
badness, severity, severeness(noun)
used of the degree of something undesirable e.g. pain or weather
naughtiness, mischievousness, badness(noun)
an attribute of mischievous children