43%RatingSave Gender Masculine Usage Czech (Rare) Pronounced Pron. RA-doos [key·IPA] Meaning & History Derived from the Czech word rád "happy, glad". The Czech author Julius Zeyer probably created it for a character in his play Radúz and Mahulena (1898). Related NamesFamily Tree·Details Feminine FormRadanaOther Languages & CulturesRadovan, Rade(Croatian) Radu(Romanian) Radovan, Rade(Serbian) Radovan(Slovak) Name DaysName Days? Slovakia: December 10 Categories feelings, happiness, rare Czech