weightlessness

Weightlessness is when something doesn't weigh anything or feels like it's floating. It can also refer to being without responsibility or burden.

Imagine you're on a plane and you feel like you're not attached to the ground, that's weightlessness. Or think about astronauts in space - they don't have any gravity pulling them down, so everything feels light and floaty. We use this word a lot when talking about outer space or special experiences where you feel like you can just let go of your worries.