beyond the pale
US /biˈjɑːnd ðə peɪl/
UK /biˈjɑːnd ðə peɪl/

1.
越界, 不可接受
unacceptable or outside the bounds of what is considered normal, acceptable, or civilized behavior
:
•
His comments were completely beyond the pale.
他的評論完全越界了。
•
Such behavior is beyond the pale in a professional setting.
這種行為在專業場合是不可接受的。