As a verb undighted
is past tense of undight.
As an adjective unsighted is
not sighted; unseen.
undighted
English
Verb
(head)
(undight) undight
English
Verb
(
en verb)
(obsolete) To take off (a piece of clothing).
*1590 , (Edmund Spenser), The Faerie Queene , III.5:
*:His mayled haberjeon she did undight , / And from his head his heavy burganet did light.
unsighted
English
Adjective
(-)
Not sighted; unseen.