ATTABOY
Meaning of ATTABOY in English
ˈad.əˌbȯi, ˈatə-, ˌ ̷ ̷ ̷ ̷ˈ ̷ ̷ interjection
Etymology: alteration of that's the boy
— used to express encouragement, approval, or admiration
Webster's New International English Dictionary.
Новый международный словарь английского языка Webster.
2012