weight·less 
/ˈweɪtləs/ adjective
/ˈweɪtləs/ adjective : having no weight or seeming to have no weight
▪ a light fabric that feels almost weightless ▪ She floated in the pool, weightless. ▪ The astronauts are living in a weightless environment. [=an environment in which people and things float because they are not affected in the usual way by gravity]
▪ a light fabric that feels almost weightless ▪ She floated in the pool, weightless. ▪ The astronauts are living in a weightless environment. [=an environment in which people and things float because they are not affected in the usual way by gravity]
— weight·less·ness noun [noncount]
