English Reference

Word

deviate

Phoneticsde·vi·ate, stress on the first syllable

/ˈdiviˌeɪt/

Definitions

01to change from a plan or norm

C1 · Advanced Academic

v. to do something different from a plan, a rule, or what is normal.

v. to depart from an established course, principle, or standard. Intransitive; typically takes the preposition 'from'.

“The pilot had to deviate from the original flight path to avoid the storm.”

“The researchers decided not to deviate from the established protocol, ensuring that the results remained comparable to previous studies.”

Usage

Usually followed by the preposition 'from'.

Antonyms

conformfollowstick to

02a difference in value

C2 · Proficiency Countable noun Mathematics Technical

n. the difference between a measured number and the average or expected number.

n. the difference between a particular observed value and a fixed reference value, such as the mean.

“We need to calculate the deviate for each piece of data in this set.”

“In this statistical model, each deviate represents the distance of an individual score from the group average.”

Usage

Common in statistical analysis; often replaced by 'deviation' in general contexts.

03a person with unusual behavior

C2 · Proficiency Countable noun Sociology Formal · Technical

n. a person whose behavior is very different from what most people think is normal.

n. a person whose social behavior or psychological state departs significantly from established norms.

“In the past, people who didn't follow social rules were often labeled as deviates.”

“The study examines how society labels certain individuals as deviates based on their refusal to adopt traditional career paths.”

Teaching tip

This noun form is less common today than the adjective 'deviant'. In modern speech, it can carry a strong negative or judgmental tone.

Synonyms

misfitnonconformist

Antonyms

conformist

Real-World Examples

“It also claimed the convoy had deviated from the route that had been coordinated with the military.”
BBC News 20 Aug 2026
“These include whether it deviates from a perfect sphere, and whether the black hole has any additional properties beyond spin that influence its behavior.”
Ars Technica 19 Aug 2026
“Whether this legal challenge will succeed depends in part on whether judges will continue to defer to the president on these particular levies, no matter how much they deviate from previous practice.”
The Conversation 13 Aug 2026

Etymology

From Late Latin dēviātus, perfect passive participle of dēviō, see -ate (verb-forming suffix) for more. Compare French dévier.

From a substantivation of Late Latin dēviātus, see Etymology 1 and -ate (noun-forming suffix) for more.

From Late Latin dēviātus, see Etymology 1 and -ate (adjective-forming suffix) for more.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

VERB

deviate(C1)

ADJECTIVE

Domains

SociologyStatistics

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Occasional
Level
C1 · Advanced
Updated

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