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Adjective:
on call
Off
work
, but
available
to
provide
a
service
if
requested
"
I'm
on
call
for my
patients
4
days
a
week
and
every
fourth
weekend
"
Encyclopedia:
On call
on all fours
on an individual basis
on an irregular basis
on and off
on and on
on appro
on approval
on average
on balance
on board
on call
on camera
on cloud nine
on demand
on duty
on earth
on edge
on end
on faith
on fire
on fleek