bad

1 bad /ˈbæd/ adjective
worse /ˈwɚs/ ; worst /ˈwɚst/
1 bad
/ˈbæd/
adjective
worse /ˈwɚs/ ; worst /ˈwɚst/
Britannica Dictionary definition of BAD
1 
a  : low or poor in quality
b  : not correct or proper
— see also bad language
2 
a  : not pleasant, pleasing, or enjoyable
b  : having, marked by, or relating to problems, troubles, etc.
— see also bad blood, bad news
c  : not adequate or suitable
d  : not producing or likely to produce a good result
e  : expressing criticism or disapproval
3 
a  : not healthy : marked or affected by injury or disease
b  : causing harm or trouble
— often + for
4 
a  : not morally good or right : morally evil or wrong
— see also bad faith
b  : not behaving properly
— see also bad boy
5 
a  : not skillful : not doing or able to do something well
— often + at
b  : having a tendency not to do something — + about
6 
a  : not happy or pleased : feeling regret or guilt about something
b  : not cheerful or calm
7 
: serious or severe
8 
: no longer good to eat or drink : not fresh
9 
chiefly US, informal badder; baddest
a  : very good
b  : very tough or dangerous

a bad job

— see job

a bad lot

— see lot

bad apple

— see apple

come to a bad end

— see 1end

from bad to worse

: from a bad state or condition to an even worse state or condition

in a bad way

: in a bad condition

in someone's bad books

— see 1book

not bad

: fairly good or quite good

too bad

1 
— used to show that you are sorry or feel bad about something
2 
— used in an ironic way to show that you are not sorry or do not feel bad about something

with bad grace

— see 1grace

— badness

noun [noncount]
2 bad /ˈbæd/ adverb
worse; worst
2 bad
/ˈbæd/
adverb
worse; worst
Britannica Dictionary definition of BAD
US, informal
: badly

bad off

US
1 
: having little money
2 
: in a bad or difficult situation or condition
3 bad /ˈbæd/ noun
3 bad
/ˈbæd/
noun
Britannica Dictionary definition of BAD
1 
[noncount] : morally bad forces or influences : evil
2 
the bad
a  [singular] : the unpleasant things that happen to people
b  [singular] : things that are morally wrong
c  [plural] : morally bad people