The word(s) "lost" appears 18 time(s) in 18 verse(s) in Quran in Muhammad Pickthal translation.

(11) Or some morning the water thereof will be lost in the earth so that thou canst not make search for it.

(12) (Saying): Eat of the good things wherewith We have provided you, and transgress not in respect thereof lest My wrath come upon you: and he on whom My wrath cometh, he is lost indeed.

(13) Then We heard his prayer and removed that adversity from which he suffered, and We gave him his household (that he had lost) and the like thereof along with them, a mercy from Our store, and a remembrance for the worshippers;

(14) They will say: Be Thou Glorified! it was not for us to choose any protecting friends beside thee; but Thou didst give them and their fathers ease till they forgot the warning and became lost folk.

(15) And they say: When we are lost in the earth, how can we then be re-created? Nay but they are disbelievers in the meeting with their Lord.

(16) Verily We sent messengers before thee, among them those of whom We have told thee, and some of whom We have not told thee; and it was not given to any messenger that he should bring a portent save by Allah's leave, but when Allah's commandment cometh (the cause) is judged aright, and the followers of vanity will then be lost.

(17) That, your thought which ye did think about your Lord, hath ruined you; and ye find yourselves (this day) among the lost.

(18) And unto Allah belongeth the Sovereignty of the heavens and the earth; and on the day when the Hour riseth, on that day those who follow falsehood will be lost.