anomaly
nounUK /əˈnɒm.ə.li/
US /əˈnɑː.mə.li/
Something that is different from what is normal or expected.
The warm weather in December was an anomaly for this region.
RELATED WORDS
OTHER MEANINGS
2. A deviation from the common rule or arrangement.
The scientist noted an anomaly in the data that required further study.
3. A person or thing that is strange or unusual.
In a family of athletes, he was an anomaly who preferred chess.
4. In astronomy, a departure from a predicted orbit or position.
Astronomers detected an anomaly in the planet's orbital path.