anomaly

/əˈnɑːməli/ Formal

Say it: uh-NOM-uh-lee

1. noun Something that deviates from what is standard, normal, or expected.
The sudden snowstorm in June was an anomaly that broke all weather records.
2. noun A specific deviation from a general rule, model, or pattern, especially in scientific or technical data.
Researchers are investigating a gravitational anomaly that seems to be affecting the satellite's orbit.

📖 Seen in the wild

The discovery of a planet orbiting two stars was considered an anomaly in astronomical observations.
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✏️ anomaly in a sentence

The sudden spike in sales last quarter was considered an anomaly, not the beginning of a new trend.
In a family of loud extroverts, his quiet, introverted nature was a gentle anomaly.
The audit revealed a single accounting anomaly that required further investigation.
For a brief period, the company offered unlimited vacation, a historical anomaly that has since been corrected.
The deep-sea probe detected a magnetic anomaly on the ocean floor.
His ability to forgive such a betrayal was a true anomaly of human character.
The fact that the patient's tumor shrank without treatment was a medical anomaly.

🔁 Synonyms & antonyms

irregularity aberration exception oddity outlier peculiarity inconsistency quirk

irregularity · suggests a break in a consistent pattern or rule.

aberration · implies a deviation that is unwelcome or morally questionable.

exception · highlights something that doesn't follow a rule, often in a way that is acknowledged.

oddity · focuses more on the strangeness or peculiarity of the thing itself.

Opposites: norm, standard, regularity, rule, conformity

🌱 Where it comes from

The word anomaly traces back to the Greek 'anomalia', meaning 'inequality' or 'irregularity'. This came from the adjective 'anōmalos', which literally meant 'uneven'. It was formed by combining 'an-', meaning 'not', with 'homalos', meaning 'even', giving it the core sense of something that is 'not the same' as everything else.

🧩 How it's used

Common patterns:

statistical anomalydetect an anomalyexplain the anomalya strange anomalya historical anomalya data anomaly

Anomaly is a formal word, best suited for academic, technical, or professional writing. In casual conversation, you might say 'odd thing' or 'fluke' instead. While it can be confused with 'abnormality', an anomaly is simply a deviation, whereas an abnormality often carries a negative connotation of being defective or pathological.

Word family: anomalous, anomalously

💬 Quick answers

What does anomaly mean in simple terms?

An anomaly is something that is different from what is normal or expected. It's like a glitch in a pattern or an exception to a rule.

What is the difference between an anomaly and an outlier?

An outlier is a specific type of anomaly used in statistics to describe a data point that is far away from other points. Anomaly is a broader term for any deviation from the norm, not just in data.

Is 'anomaly' a negative word?

Not necessarily. Anomaly is a neutral word that simply points out a deviation. Whether that deviation is good, bad, or just interesting depends entirely on the context.

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