Synonyms of deviationnext
: an act or instance of deviating: such as
a
navigation : deflection of the needle of a compass caused by local magnetic influences (as in a ship)
b
mathematics : the difference between a value in a frequency distribution and a fixed number (such as the mean)
c
: departure from an established ideology or party line
deviation from Communist orthodoxy
d
: noticeable or marked departure from accepted norms (see norm sense 2) of behavior

Examples of deviation in a Sentence

There have been slight deviations in the satellite's orbit. Having juice instead of coffee was a deviation from his usual routine. The pattern's deviation from the norm is significant.
Recent Examples on the Web
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The movie itself disappoints him for its deviations from the Stephen King novel (including this detail may help preempt criticisms over this adaptation), but he’s also distracted by the presence of a strikingly handsome stranger (Homer Gere). Louis Peitzman, Vulture, 6 Aug. 2026 Leaders need a baseline of normal behavior for each agent and the ability to detect deviation from that baseline. Steve Wilson, Forbes.com, 4 Aug. 2026 As noted in the game story, Miller’s recovery came after a momentary deviation from his normal chill. Kevin Acee, San Diego Union-Tribune, 2 Aug. 2026 This stretch of ribosomal RNA (rRNA) is identical across every other animal that’s been studied, so the deviation jumped out at Han. Cody Cottier, Scientific American, 29 July 2026 See All Example Sentences for deviation

Word History

Etymology

see deviate entry 1

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of deviation was in the 15th century

Browse Nearby Words

Cite this Entry

“Deviation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deviation. Accessed 8 Aug. 2026.

Kids Definition

deviation

noun
: an act or instance of deviating: as
a
: the difference found by subtracting some fixed number (as the arithmetic mean of a series of statistical data) from any item of the series
b
: noticeable difference from accepted standards (as of behavior or morals)

Medical Definition

deviation

noun
: an act or instance of diverging from an established way or in a new direction: as
a
: evolutionary differentiation involving interpolation of new stages in the ancestral pattern of morphogenesis
b
: noticeable or marked departure from accepted norms of behavior

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