outlier
B2Formal to neutral
Definition
Meaning
A person, thing, or data point that differs significantly from other members of a set or group; an anomaly.
Someone who lives away from their place of origin or group affiliation; in statistics, an observation distant from other observations.
Linguistics
Semantic Notes
Often implies statistical or social deviation. Can carry neutral, positive (independent thinker), or negative (non-conformist) connotations depending on context.
Dialectal Variation
British vs American Usage
Differences
Usage is largely identical. 'Outlier' is slightly more common in American academic/professional contexts.
Connotations
Similar connotations in both varieties.
Frequency
More frequent in American English data corpora.
Vocabulary
Collocations
Grammar
Valency Patterns
[outlier] + [in/of] + [group/dataset][outlier] + [among] + [plural noun]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “To be an outlier (in a field/group)”
Usage
Context Usage
Business
Referring to exceptional performance data (sales, profits) that skews the average.
Academic
Statistical term for data points far from the mean; also used in sociology for individuals outside norms.
Everyday
Describing a person who doesn't fit in with a group or a result that doesn't match others.
Technical
In data science, an observation that lies an abnormal distance from other values.
Examples
By Part of Speech
verb
British English
- (Not a standard verb. Use 'to be an outlier' or 'to outlier' is rare/technical.)
American English
- (Not a standard verb. Use 'to be an outlier' or 'to outlier' is rare/technical.)
adverb
British English
- (No standard adverb form.)
American English
- (No standard adverb form.)
adjective
British English
- (Adjectival use is rare. Use 'outlying'.)
American English
- (Adjectival use is rare. Use 'outlying'.)
Examples
By CEFR Level
- He was an outlier in his class because he loved reading.
- Her test score was an outlier, much higher than everyone else's.
- The country's economic growth figures are a clear outlier when compared to regional trends, necessitating further investigation.
Learning
Memory Aids
Mnemonic
Think: OUT + LIE + R → Something that lies OUTside the main group.
Conceptual Metaphor
DISTANCE IS DEVIATION (e.g., 'far from the norm', 'distant from the cluster').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct translation to 'выброс' (ejection) in non-statistical contexts. For a person, consider 'изгой' (outcast) or 'белая ворона' (white crow).
Common Mistakes
- Confusing 'outlier' with 'outsider' (which lacks the statistical/deviation nuance). Using 'outlier' as a verb (it's a noun).
Practice
Quiz
In which context is 'outlier' LEAST likely to be used?
FAQ
Frequently Asked Questions
Not necessarily. It is neutral but context-dependent. In statistics, it's a technical term. For a person, it can imply positive independence or negative deviance.
'Exception' is more general. 'Outlier' specifically suggests measurable deviation from a group or statistical norm, often with a spatial/distance metaphor.
Rarely and only in very technical contexts (e.g., data science: 'to outlier a data point'). In standard English, use phrases like 'to identify as an outlier'.
There isn't a direct single-word antonym. Terms like 'inlier', 'central tendency', 'mean', 'median', or simply 'the norm' are used conceptually.
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