The word(s) "lost" appears 36 time(s) in 36 verse(s) in Quran in Abdullah Yusuf Ali translation.

(31) Man does not weary of asking for good (things), but if ill touches him, he gives up all hope (and) is lost in despair.

(32) Such are they against whom is proved the sentence among the previous generations of Jinns and men, that have passed away; for they will be (utterly) lost.

(33) Therefore, when ye meet the Unbelievers (in fight), smite at their necks; At length, when ye have thoroughly subdued them, bind a bond firmly (on them): thereafter (is the time for) either generosity or ransom: Until the war lays down its burdens. Thus (are ye commanded): but if it had been Allah's Will, He could certainly have exacted retribution from them (Himself); but (He lets you fight) in order to test you, some with others. But those who are slain in the Way of Allah,- He will never let their deeds be lost.

(34) "Nay, ye thought that the Messenger and the Believers would never return to their families; this seemed pleasing in your hearts, and ye conceived an evil thought, for ye are a people lost (in wickedness)."

(35) Say: "See ye?- If your stream be some morning lost (in the underground earth), who then can supply you with clear-flowing water?"

(36) But when they saw the (garden), they said: "We have surely lost our way: