4 syllables: de, vi, a, tion. Stress on a.
dee-vee-AY-shuhn
/ˌdiviˈeɪʃən/
deviation is pronounced dee-vee-AY-shuhn (/ˌdiviˈeɪʃən/). It has four syllables (de-vi-a-tion), with the stress on "a". Deviation refers to a departure from a standard, norm, or expected course. It denotes the act or instance of diverging from an established pattern, rule, or location. In many contexts, deviation carries either a neutral or negative connotation, depending on whether the departure is acceptable or problematic.
Deviation refers to a departure from a standard, norm, or expected course. It denotes the act or instance of diverging from an established pattern, rule, or location. In many contexts, deviation carries either a neutral or negative connotation, depending on whether the departure is acceptable or problematic.
"The engineer noted a small deviation from the blueprint."
"There was a deviation in the traffic pattern due to construction."
"His deviation from the usual routine surprised everyone."
Pronounce as /ˌdiː.viˈeɪ.ʃən/. Start with a light stress on the third syllable: de-vi-ATION. The first syllable /diː/ is a long E; the middle /vi/ is a quick V + I vowel; the stressed /ˈeɪ/ is a long A as in 'day'; the final /ʃən/ is a soft schwa + 'n' with a light 'shun' ending. Tip: keep the /vi/ smooth and avoid breaking it into /vɪ/ + /iˈeɪ/.
Common mistakes: (1) Misplacing stress, saying de-vi-ation with stress on the wrong syllable, (2) Rendering /eɪ/ as /e/ or /ɛ/ and mispronouncing /ʃən/ as /sən/ or /ʃən/ with too much breath. Corrections: keep main stress on the third syllable /ˈeɪ/ and ensure /vi/ is a clean /vi/ blend rather than separate vowels; end with a clear /ʃən/ rather than a hard 'shun' with extra consonant. Practice with slow tempo to lock the sequence: /ˌdiː.viˈeɪ.ʃən/.
In US, UK, and AU, the pronunciation is largely the same: /ˌdiː.viˈeɪ.ʃən/. Minor differences: rhoticity may tint the initial /diː/ if followed by a vowel proxy in rapid speech; Australians may slightly shorten the final /ən/ and reduce the vowel in /vi/ depending on speaker pace. Generally, vowel quality of /iː/ remains long, /eɪ/ stays a clear diphthong, and /ʃən/ remains an unstressed schwa + n. Accent-specific variations are subtle and mostly affect rhythm and vowel length rather than core phonemes.
Because it blends a stressed diphthong in /eɪ/ with a short glide in /vi/ and a final /ʃən/ cluster that can reduce in fluent speech. The word requires maintaining the secondary stress in /ˌdiː/ and the primary stress on /ˈeɪ/, while keeping /vi/ smoothly connected to /eɪ/ without intruding a vowel sound between. The /ʃ/ must be soft, not merged with preceding /i/; subtle tongue positioning and mouth openness are crucial to avoid an 'ev-i-ATION' mispronunciation.
A unique concern is the interaction between the /vi/ and /ˈeɪ/ sequences: ensure you do not overarticulate the /i/ that precedes the /eɪ/. Tip: keep a light, continuous glide from /vi/ into /eɪ/ so that the yoking of the syllables feels natural. Practice with the phrase 'statistical deviation' to hear how /vi/ links to /ˈeɪ/ in fluent speech.
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US: tends toward rhoticity in connected contexts; the /ɪ/ in /vi/ is short; UK: tends to be more clipped, with a slightly tenser /iː/ before /ˈeɪ/; AU: often vowel reductions in fast speech; keep the final /ən/ soft. IPA anchors: /ˌdiː.viˈeɪ.ʃən/; ensure /ˈeɪ/ is a strong diphthong, not a monophthong; practice linking /diː/ to /vi/ smoothly; maintain non-rhoticity in UK but not always in AU.
Deviation comes from the Latin deviatio, from the verb deviare meaning ‘to turn aside’ or ‘to bend away.’ The Latin prefix de- conveys separation or removal, while via (the word’s root) means ‘road’ or ‘way.’ The term entered English via late Latin and Old French into Middle English, originally in a mathematical or navigational sense—an accounting of trajectories that diverge from a straight path. Over time, deviation broadened to any departure from a standard, rule, or expected course, including moral, statistical, and engineering contexts. By the 17th–18th centuries, the word appeared in scientific and technical discourse, especially in physics, geometry, astronomy, and statistics. The sense of “variance” or “difference from a norm” became prevalent, and today deviation is widely used across disciplines to quantify how far a data point, path, or behavior diverges from an established reference. First known uses in English literature trace to discussions of geometry and navigation, where a ship’s course deviation from a planned route was critically important for safety and accuracy. The word’s evolution mirrors the growth of scientific measurement, where precise thresholds and tolerances are defined to detect and interpret deviation from expected values.
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Words that rhyme with "deviation"
-ion sounds
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