心外千万
Meanings
1
utterly mortified; completely upset; highly regrettable
A strong, somewhat formal yojijukugo expressing deep personal chagrin, mortification, or aggrieved disappointment at a situation or someone's actions. Often used when one feels wronged or let down.
I am utterly mortified by his irresponsible attitude.
It is highly regrettable to be misunderstood in such a way.