Rad- or Rada is found at the beginning of several Bulgarian names, both masculine and feminine. For example Radka - nickname for Rada also used independently Radostin and Radostin - both come from the Bulgarian word racist, meaning joy Radomir - masculine name meaning joyful pace. It is also the name of a city in Bulgaria Radoslav(a) Radan, Radana.
Rada was the name of a character in the 1975 Soviet film Табор уходит в небо (Gypsies Are Found Near Heaven), which was loosely inspired by the works of Maxim Gorky.
― Anonymous User 6/18/2017
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Rada literally means "she who is happy" in Russian, nothing to do with care. Pronounced RAH dah, accent on first syllable, sounds much softer in Russian then in English. [noted -ed]
Other names with the root "rad", which are used in Bulgaria, are the masculine "Radoslav" (the stress is on the 2nd "a"; the root "rad" and the root "slav" - the root of "glory"; there is also a masculine name "Slav"); its feminine form "Radoslava" (the stress is on the 2nd "a"; there is also a feminine name "Slava"' "slava" means "glory" in Bulgarian); the masculine name "Radostin" (the stress is on the "i"; "radost" means "joy", "gladness" in Bulgarian); its feminine form "Radostina" (the stress is on the "i"); the feminine name "Radost"; the masculine name "Radomir" (the stress is on the "i"; "mir" means "peace" in Bulgarian and it's the root of "peace"); its feminine form "Radomira" (the stress is on the "i"; there is also a feminine name "Mira"); the masculine name "Radoi" (the stress is on the diphthong "oi").Also the masculine name "Radko", its feminine form "Radka" and the name "Rado", which is the masculine form of "Rada".And the feminine name "Radina" (the stress is on the "i") and its masculine form "Radin" (the stress is on the "i").