The word(s) "unless" appears 34 time(s) in 33 verse(s) in Quran in Muhammad Pickthal translation.

(11) The chieftains of his people, who were scornful, said: Surely we will drive thee out, O Shu'eyb, and those who believe with thee, from our township, unless ye return to our religion. He said: Even though we hate it?

(12) We should have invented a lie against Allah if we returned to your religion after Allah hath rescued us from it. It is not for us to return to it unless Allah our Lord should (so) will. Our Lord comprehendeth all things in knowledge. In Allah do we put our trust. Our Lord! Decide with truth between us and our folk, for Thou art the best of those who make decision.

(13) And when they feared the consequences thereof and saw that they had gone astray, they said: unless our Lord have mercy on us and forgive us, we verily are of the lost.

(14) Whoso on that day turneth his back to them, unless manoeuvring for battle or intent to join a company, he truly hath incurred wrath from Allah, and his habitation will be hell, a hapless journey's end.

(15) The building which they built will never cease to be a misgiving in their hearts unless their hearts be torn to pieces. Allah is Knower, Wise.

(16) Say: Is there of your partners (whom ye ascribe unto Allah) one that leadeth to the Truth? Say: Allah leadeth to the Truth. Is He Who leadeth to the Truth more deserving that He should be followed, or he who findeth not the way unless he (himself) be guided. What aileth you? How judge ye?

(17) He said: My Lord! Lo! in Thee do I seek refuge (from the sin) that I should ask of Thee that whereof I have no knowledge. unless Thou forgive me and have mercy on me I shall be among the lost.

(18) He said: I will not send him with you till ye give me an undertaking in the name of Allah that ye will bring him back to me, unless ye are surrounded. And when they gave him their undertaking he said: Allah is the Warden over what we say.

(19) Then he (Joseph) began the search with their bags before his brother's bag, then he produced it from his brother's bag. Thus did We contrive for Joseph. He could not have taken his brother according to the king's law unless Allah willed. We raise by grades (of mercy) whom We will, and over every lord of knowledge there is one more knowing.

(20) Their messengers said unto them: We are but mortals like you, but Allah giveth grace unto whom He will of His slaves. It is not ours to bring you a warrant unless by the permission of Allah. In Allah let believers put their trust!