Invisible (6)
'invisible' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for unseen that I've seen before include "Translation exercise" , "Not perceived or observed" , "Passage for translation" , "Invisible or not observed" , "Hidden from view" .)
'invisible' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for out of sight that I've seen before include "secret" , "Top" , "Hidden" .)