out of your depth

US /aʊt əv jʊər dɛpθ/
UK /aʊt əv jʊər dɛpθ/
"out of your depth" picture
1.

fuera de su alcance, no estar a la altura

in a situation that is too difficult for you to understand or deal with

:
I felt completely out of my depth in the advanced physics class.
Me sentí completamente fuera de mi alcance en la clase de física avanzada.
He's a good manager, but he's out of his depth when it comes to international finance.
Es un buen gerente, pero está fuera de su alcance cuando se trata de finanzas internacionales.