Similar sound:
* Ефрем (Efrem): This name is pronounced similarly to "Jeffery" and has a biblical origin, meaning "fruitful" or "abundant."
* Георгий (Georgiy): This name, often shortened to "Жора (Zhora)," sounds somewhat similar to "Jeff" and means "farmer" or "earth worker."
Similar meaning:
* Ефрем (Efrem): As mentioned above, this name shares the same biblical origin as "Jeffery," making it a potential equivalent in meaning.
* Богдан (Bogdan): This name means "given by God" and shares a similar connotation of divine gift with "Jeffery," which means "God's peace."
Ultimately, the best Russian equivalent for Jeffery will depend on the specific connotations you want to capture. You could choose a name based on sound, meaning, or a combination of both.