The word(s) "unseen" appears 31 time(s) in 31 verse(s) in Quran in Abdullah Yusuf Ali translation.

(11) To Allah do belong the unseen (secrets) of the heavens and the earth, and to Him goeth back every affair (for decision): then worship Him, and put thy trust in Him: and thy Lord is not unmindful of aught that ye do.

(12) "Turn ye back to your father, and say, 'O our father! behold! thy son committed theft! we bear witness only to what we know, and we could not well guard against the unseen!

(13) Such is one of the stories of what happened unseen, which We reveal by inspiration unto thee; nor wast thou (present) with them then when they concerted their plans together in the process of weaving their plots.

(14) He knoweth the unseen and that which is open: He is the Great, the Most High.

(15) Gardens of Eternity, those which (Allah) Most Gracious has promised to His servants in the unseen: for His promise must (necessarily) come to pass.

(16) Has he penetrated to the unseen, or has he taken a contract with (Allah) Most Gracious?

(17) Nor is there aught of the unseen, in heaven or earth, but is (recorded) in a clear record.

(18) Do ye not see that Allah has subjected to your (use) all things in the heavens and on earth, and has made his bounties flow to you in exceeding measure, (both) seen and unseen? Yet there are among men those who dispute about Allah, without knowledge and without guidance, and without a Book to enlighten them!

(19) The Unbelievers say, "Never to us will come the Hour": Say, "Nay! but most surely, by my Lord, it will come upon you;- by Him Who knows the unseen,- from Whom is not hidden the least little atom in the heavens or on earth: Nor is there anything less than that, or greater, but is in the Record Perspicuous:

(20) Then, when We decreed (Solomon's) death, nothing showed them his death except a little worm of the earth, which kept (slowly) gnawing away at his staff: so when he fell down, the Jinns saw plainly that if they had known the unseen, they would not have tarried in the humiliating Penalty (of their Task).