means Not correct, just, or appropriate — out of line with fact, morality, or what was intended.

from From Old English 'wrang,' meaning crooked or twisted, borrowed from Old Norse 'rangr' (awry, unjust). The root idea is physical: something bent out of true. It's a cousin of 'wring' and 'wrench' — the sense of twisting carried over into the moral world, so that to be 'wrong' is, quite literally, to be bent away from the straight.