Groundlessness; worthlessness; triviality; vanity; frivolity.
The state of being idle; inactivity.
The state of being indolent; indolence.
Emptiness, the absence of an intrinsic essence or nature which is stable and separable from other things.
Emptiness, in terms of a meditative state; an Eastern concept of a high meditative state of calm and freedom from distraction.