invisible
[in-viz–uh-buh l]
1.
not visible; not perceptible by the eye:
invisible fluid.
2.
withdrawn from or out of sight; hidden:
an invisible seam.
3.
not perceptible or discernible by the mind:
invisible differences.
4.
not ordinarily found in financial statements or reflected in statistics or a listing:
Goodwill is an invisible asset to a business.
5.
concealed from public knowledge.
6.
an invisible thing or being.
7.
the invisible, the unseen or spiritual world.
1000 Invisible Things 