unseen
un-seen
noun
A passage in an examination not previously studied by students.
"The students struggled with the unseen translation."
adjective
Not seen or perceived; hidden from view or detection.
"An unseen hand guided the decision."
Thesaurus
Synonyms: unlooked-for, unexpected, unforeseen, unanticipated, out of the blue, unnoticed, unobserved, unseeable, invisible, spiritual domain, spiritual world