cordless
adj. B2 Upper Intermediate US //ˈkɔɹdɫəs// UK //kˈɔːdləs// cord·less
adj. describing a tool or device that does not need to be plugged into a wall socket. It uses a battery instead of a wire to get its power.
adj. operating without a connecting wire or cable, typically powered by a rechargeable battery. Often used to describe tools, phones, or other portable electronics.
I prefer using a cordless drill because it is easier to move around.
The office upgraded to a cordless phone system to allow staff to answer calls from anywhere in the building.
Modern cordless vacuum cleaners have significantly improved battery life, making them a viable alternative to traditional corded models for larger households.