

Мой брат очень умный.
My brother is very smart.
Какой умный ребёнок!
What a smart child!
Разве он не умный?
Isn't he smart?
"умный" is in the lesson "Positive traits" (Level 28), along with 9 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.