sightless

Adjective

1. Without sight; blind; unseeing.
   • And yet it was possible he might love her—love her truly and deeply: if so, of what avail would it be to lower him in her esteem? It were best for Lucy still to gaze with sightless eyes on her idol. - 1834, L[etitia]...
2. Synonym of invisible.
   • In his return, arriving at a rising ground, a knoll, he heard a rustling of the leaves in his front: an enemy was suspected ; he gathered his men around him, each taking his tree. The enemy was sightless to Boyd, and...
   • The toiling world is sightless to those who cannot see. - 1908, The Summary, volume 36, page 72:

   Synonyms: inapparent uneyeable viewless disapparent inconspicuous invis invisible inviso nondisplayed nonvisible out of sight sightless unapparent unconspicuous unseeable unseen unspottable unvisible