back order
Back order (noun) means an order for goods that a seller has accepted but cannot ship yet because the item is out of stock, and which will be sent once new stock arrives. Example: “The boots are on back order until the end of the month.”
How to use back order
Learner’s notesIn plain EnglishAn order you have paid for or placed that the shop cannot send until it gets more stock.
Commercial and retail. Written as two words as a noun and usually hyphenated as a verb.
American English often writes it as one word, backorder.
Fill the gap
Can you complete this real example?
The boots are on _____ until the end of the month.