How do you say good boy in Russian?

The most common and natural way to say "good boy" in Russian is "хороший мальчик" (horoshy mal'chik).

Here's a breakdown:

* хороший (horoshy) means "good"

* мальчик (mal'chik) means "boy"

You can also use other variations depending on the context and tone:

* "молодец" (molodec) - "well done", "good job"

* "умница" (umnitsa) - "clever", "smart", "good boy" (especially for younger boys)

* "браво" (bravo) - "bravo", used for praising someone's achievement

It's important to consider the age and personality of the boy when choosing the right phrase.