DEVIATION

noun the state or result of having deviated; a transgression; an act of sin; an error; an offense.

2. deviation ·noun the act of deviating; a wandering from the way; variation from the common way, from an established rule, ·etc.; departure, as from the right course or the path of duty.

3. deviation ·noun the voluntary and unnecessary departure of a ship from, or delay in, the regular and usual course of the specific voyage insured, thus releasing the underwriters from their responsibility.