при первой возможности

at the first opportunity

→ при
phrase Rare #43,583
at the first opportunity Often used to mean “as soon as possible.”
RU: Я позвоню тебе при первой возможности.
EN: I’ll call you at the first opportunity.

Мы свяжемся с вами при первой возможности.

We will contact you at the earliest opportunity.

Ты же сдаёшься при первой возможности!

You give up at the first opportunity!

— Академия Рашмор (1998)