Wiktionary
gravityless
a. Without gravity (the physical force).
Usage examples of "gravityless".
He pushed against the walls like a man in a gravityless environment, turning into a standing position, and shoved into the corridor, a little of his terror draining out of him as the elevator whined to a stop behind.
But where they joined the gravityless focal structure, they were scarcely thick-stemmed enough to enclose the elevator shafts that ran the quarter-mile length of each.
I went in deeper with that silky glide that makes you think you are going to flow along with it forever, like the entry of a diver or the dismount of a gymnast, so perfect and gravityless, it should mark the first stage of a journey and not merely an abrupt transition into a clumsier state.