busy as a beaver
flat out
rushed
flat strap
rushed off one's feet
flat chat
superbusy
abustle
on the trot
semibusy
busyish
tied up
thrang
swamped
busily
chokka
busyness
overoccupied
overbusy
pragmatic
kaypoh
up the walls
congestedly
I'm busy
slammed
jostlingly
throng
hectically
employ
traffic
overcluttered
up to one's neck in alligators
in the throes of
occupy oneself
on the go
snarl up
hive of activity
packed like sardines
busy
occupied
bustling
occupational therapy
overleisured
up to
overpreoccupied
hustle
overfurnished
preoccupiedly
slam
overleisurely