Anomaly

/əˈnɒməli/intermediatenoun

Data scientists flag it, doctors chase it, and sports fans love it when the underdog breaks the model.

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Meaning

Something that deviates from what is standard, normal, or expected.

Memory trick

AN-OMALY: not (an-) normal, something off-pattern.

Examples

1

The spike was an anomaly, not a sustained trend.

2

Analysts flagged an anomaly in payment logs.

3

Her result was an anomaly compared with the rest of the cohort.

Synonyms

irregularityaberrationexceptionoutlierodditydeviationquirk

Antonyms

normstandardregularitypatternconformity

Etymology

From Greek anomalia "unevenness, irregularity," from an- "not" + homalos "even."

Usage Notes

Very useful in data, monitoring, and scientific contexts.

Real-life contexts

1

Use in dashboards: "Treat this as an anomaly until we see a pattern."

2

Use in debugging: "Let’s isolate whether this is anomaly or regression."

3

Use in reporting: "Document anomalies with context, not guesses."

Common Mistakes

An anomaly is usually a one-off deviation, not necessarily a systemic issue.

Anomaly: Meaning, Examples & How to Remember It | WordFlippin