being very busy; busyness
overloading (someone; with work); overworking (someone); overwhelming; flooding (e.g. with tasks)
busy; high-stress; hectic; pressed (with business)
excuse me for interrupting you when you are so busy
there are brief moments of leisure even when at one's busiest
having free time to spare in the midst of busyness; leisure in the intervals of one's work
to be very busily occupied; to be swamped (with work); to be overwhelmed (e.g. by tasks)
in great haste; hurriedly; in a hurry