deviation

noun
UK /ˌdiːviˈeɪʃn/
US /ˌdiːviˈeɪʃn/

A deviation is when something goes a different way than it should.

The pilot noticed a small deviation from the planned flight path.

SYNONYMS

departuredivergencedifferencevariationshift

RELATED WORDS

deviationistdeviatedeviancedeviationism

OTHER MEANINGS

2. A difference from what is normal or expected, especially in statistics.

The scientist measured the deviation of each result from the average.

3. A change in direction, such as of a compass needle or a moving object.

The storm caused a deviation in the ship's course.

4. An action that breaks an accepted rule or standard.

Any deviation from the safety rules is not allowed.