In the entire world, Задёра (Задёра ) is an extremely rare unknown gender forename. Much more frequently, Задёра is the last name as well as the forename.
Zadera, Zadjora, and Zadyora
Галина, Сергей, and Николай
) is an extremely rare unknown gender forename. Much more frequently, Задёра is the last name as well as the forename.