What is the Hebrew word for fail?
nichshal (נכשל), pronounced neekh-SHAHL
There isn't actually a Hebrew word that literally means the Christian concept of sin. Jewish liturgy uses the word "khet" (חטא) which is an archery term meaning "missing the mark". The Hebrew word which is translated as "Sin" in the English Bible, was "Het" (חטא), which meant to err, or miss the mark. In the Judaic religious sense it meant to fail to to live up to the commandments of God.