1
crazy
/ˈkreɪzi/
adjective
crazier;
craziest
crazier;
craziest
Britannica Dictionary definition of CRAZY
[also more crazy; most crazy]
1
:
not sane: such as
a
usually offensive
:
having or showing severe mental illness
◊ This sense is no longer used in a serious way and is now usually considered offensive. The phrase mentally ill is preferred.
b
:
unable to think in a clear or sensible way
c
—
used in the phrase drive/make (someone) crazy to describe annoying or bothering someone very much
-
It makes me crazy [=I feel very annoyed] when people drive like that.
-
That noise is driving me crazy. [=it is really annoying me]
-
The kids were driving the teacher crazy.
—
see also stir-crazy
3
:
very foolish or unreasonable
-
He likes to drive at crazy [=insane] speeds.
-
There are a lot of crazy drivers on the streets.
-
You are crazy to have paid so much for this car.
-
You would be crazy not to accept their offer!
-
What a crazy thing to do!
4
:
very strange or unusual
-
She likes crazy hair colors, like pink and blue.
-
How do you think of all these crazy ideas?
-
I love to listen to my uncle's crazy stories about his job.
5
:
liking someone or something very much
:
very fond of or enthusiastic about someone or something
—
often + about
-
They are crazy about each other. [=they like each other a lot]
-
He wasn't crazy about making the trip, but was glad he did in the end.
-
She is crazy about baseball.
go crazy
1
:
to become mentally ill
:
to go insane
—
usually used in an exaggerated way
-
I must be going crazy. I can't find my car keys anywhere.
-
He kept honking his horn, and I thought I would go (completely) crazy if he didn't stop.
2
:
to act in a way that is out of control
:
to act wildly
-
We were just talking when he suddenly went crazy and started screaming and breaking things.
-
Everybody at the party was dancing and basically going crazy.
-
The crowd went crazy [=became very excited] when the team won the championship.
like crazy
informal
1
:
with a lot of energy and speed
— crazily
/ˈkreɪzəli/
adverb
— craziness
noun
[noncount]
2
crazy
/ˈkreɪzi/
noun
plural
crazies
plural
crazies
Britannica Dictionary definition of CRAZY
[count]
chiefly US, informal
3
crazy
/ˈkreɪzi/
adverb
Britannica Dictionary definition of CRAZY
US, informal