Классный is an informal Russian adjective meaning “cool,” “great,” or “excellent.” It is commonly used for people, things, experiences, and ideas.
It originally meant “related to a class,” but in modern everyday Russian it is widely used as praise. Similar Russian words include крутой (“cool,” often stronger or more slangy), отличный (“excellent”), здоровский (“great”), and супер (“super”). The feminine form is классная, the neuter form is классное, and the plural form is классные.
- У тебя классный новый телефон.
You have a cool new phone.
- Мы посмотрели классный фильм вчера вечером.
We watched a great movie yesterday evening.
- Она классный преподаватель и всё понятно объясняет.
She is an excellent teacher and explains everything clearly.
- Спасибо за классный подарок!
Thank you for the great gift!
- Это была классная поездка к морю.
It was a great trip to the sea.