Engaged in activity or work; occupied. She was too busy to attend the meeting.
Full of activity or people; bustling. The busy street was filled with cars and pedestrians.
Characterized by a great deal of activity and movement. The busy kitchen was filled with chefs preparing meals.
Having a lot of things to do; not free. He was busy with his homework all evening.
Overly detailed or cluttered in design. The wallpaper was too busy for the small room.
(of a telephone line, electronic signal, or system) engaged or currently in use and therefore unavailable. I tried calling several times, but the line was busy.