The word(s) "warned" appears 16 time(s) in 16 verse(s) in Quran in Muhammad Pickthal translation.

(11) Then see the nature of the consequence for those warned,

(12) But when it cometh home to them, then it will be a hapless morn for those who have been warned.

(13) We created not the heavens and the earth and all that is between them save with truth, and for a term appointed. But those who disbelieve turn away from that whereof they are warned.

(14) And make mention (O Muhammad) of the brother of A'ad when he warned his folk among the wind-curved sandhills - and verily warners came and went before and after him - saying: Serve none but Allah. Lo! I fear for you the doom of a tremendous Day.

(15) And he indeed had warned them of Our blow, but they did doubt the warnings.

(16) Therefor have I warned you of the flaming Fire