at cross purposes
US /æt krɔs ˈpɜrpəsɪz/
UK /æt krɔs ˈpɜrpəsɪz/

1.
berbeza tujuan, salah faham
if two people are at cross purposes, they think that they are talking about the same thing but are in fact talking about different things, with the result that they do not understand each other
:
•
I think we're talking at cross purposes; I meant next Tuesday, not this Tuesday.
Saya rasa kita bercakap dengan tujuan yang berbeza; saya maksudkan Selasa depan, bukan Selasa ini.
•
The two departments were constantly at cross purposes, leading to inefficiencies.
Kedua-dua jabatan sentiasa berbeza tujuan, menyebabkan ketidakcekapan.