- invisible, unseeable - impossible or nearly impossible to see; imperceptible by the eye; "the invisible man"; "invisible rays"; "an invisible hinge"; "invisible mending"
Antonyms: visible, seeable, apparent, circumpolar, in sight, in view, ocular, visual, panoptic, panoptical, telescopic, viewable
- inconspicuous, invisible - not prominent or readily noticeable; "he pushed the string through an inconspicuous hole"; "the invisible man"