abovestairs
adv. B2 Upper Intermediate aboves·tairs
adv. on the floor of a house that is above the ground floor. You use this to talk about rooms like the bedrooms or the kitchen.
adv. on the upper floor of a building, typically the floor above the ground level. Often used in British English to distinguish the living areas from the basement or ground floor.
The bedrooms are all abovestairs.
The family moved their living room abovestairs to make more space for the new guests.
In many older homes, the main entrance is located on the ground floor, while the private quarters and formal dining areas are situated abovestairs.