Definition from macmillandictionary.com
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Parents of young children are always busy.
He is an extremely busy man.
Irina and Marcus were busy with preparations for their wedding.
It’s been a very busy day.
Thank you for taking time out of your busy schedule to talk to us.
a busy waiting room
a busy main road
Do not park your car near busy junctions.
the busiest port in Europe
Shops are always busier at weekends.
All lines are busy – please call back later.