out of bounds

US /aʊt əv baʊndz/
UK /aʊt əv baʊndz/
"out of bounds" picture
1.

beyond the permitted or designated area

:
The ball went out of bounds.
That area is out of bounds to visitors.
2.

unacceptable or improper behavior

:
His comments were completely out of bounds.
That kind of language is out of bounds in a professional setting.