free-standing
Synonym discussion
Sense: adjective/1
'Free-standing' and 'freestanding' are usually interchangeable for objects such as lamps, whiteboards, tubs, and ovens that are made to stand by themselves instead of being fitted into a wall or cabinet. 'Standalone' often overlaps, but it is common in technical and commercial language for machines, software, or single units. 'Self-supporting' is narrower and more structural: it stresses that the object or frame can hold itself up safely. When you want the everyday home or shop meaning, 'free-standing' is often the clearest choice. A free-standing tub stands on the floor by itself, while a standalone unit can also be something less physical, such as a separate device.
Etymology
This modern adjective combines 'free' with 'standing'. It first described things that could stand on their own without being attached, and from that physical idea it also developed a broader sense for units that exist independently rather than as part of something larger.