crazy
Of unsound mind; insane; demented.
Example
“His ideas were both frightening and crazy.”
Other meanings
Out of control.
“When she gets on the motorcycle she goes crazy.”
Very excited or enthusiastic.
“He went crazy when he won.”
Where this comes from
This definition is adapted from “crazy” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.