Horosho (Russian хорошо; IPA: /xərɐˈʂo/) is a catchword of Love Live! School Idol Project's Ayase Eli and Ayase Arisa, as well as Kantai Collection's Hibiki.
The word itself can be used either as an adverb meaning "well", "good", or "nice"; or an interjection with additional meanings "okay!" and "all right!".