An invisible person or thing; specifically, God, the Supreme Being.
A Rosicrucian; so called because avoiding declaration of his craft.
One of those (as in the 16th century) who denied the visibility of the church.
To make invisible, to invisiblize.
Unable to be seen; out of sight; not visible.
Not appearing on the surface.
Apparently, but not actually, offline.
That is ignored by a person.