Most common:
* Аги́льный (agil'nyy) - This is the most common translation for "agile" in the context of software development and project management.
Other options:
* Гибкий (gibkiy) - This translates to "flexible" and can be used as a synonym for "agile" in some contexts.
* Быстрый (bystryy) - This means "fast" or "quick" and can be used to describe an agile approach.
* Проворный (provornyy) - This means "nimble" or "agile" in a more physical sense.
The best translation will depend on the specific context in which you are using the word "agile."