unfilled

adjective
1
if a job or position is unfilled, nobody has been chosen for it
بی‌متصدی, بدون تصدی
2
if an order for goods is unfilled, the goods have not been supplied
تحویل نشده, ارسال‌نشده
There is a backlog of unfilled orders to deal with.
3
if a break in a conversation is unfilled, nobody speaks
بی‌حرف, بی‌کلام, بی‌صحبت