The word(s) "loser" appears 35 time(s) in 34 verse(s) in Quran in Muhammad Pickthal translation.

(21) Say: Shall We inform you who will be the greatest losers by their works?

(22) And they wished to set a snare for him, but We made them the greater losers.

(23) If ye were to obey a mortal like yourselves, then, lo! ye surely would be losers.

(24) Those are they for whom is the worst of punishment, and in the Hereafter they will be the greatest losers.

(25) Say (unto them, O Muhammad): Allah sufficeth for witness between me and you. He knoweth whatsoever is in the heavens and the earth. And those who believe in vanity and disbelieve in Allah, they it is who are the losers.

(26) The Prophet is closer to the believers than their selves, and his wives are (as) their mothers. And the owners of kinship are closer one to another in the ordinance of Allah than (other) believers and the fugitives (who fled from Mecca), except that ye should do kindness to your friends. This is written in the Book (of nature).

(27) Then worship what ye will beside Him. Say: The losers will be those who lose themselves and their housefolk on the Day of Resurrection. Ah, that will be the manifest loss!

(28) His are the keys of the heavens and the earth, and they who disbelieve the revelations of Allah - such are they who are the losers.

(29) And verily it hath been revealed unto thee as unto those before thee (saying): If thou ascribe a partner to Allah thy work will fail and thou indeed wilt be among the losers.

(30) And We assigned them comrades (in the world), who made their present and their past fairseeming unto them. And the Word concerning nations of the jinn and humankind who passed away before them hath effect for them. Lo! they were ever losers.