phenomenon
noun/fəˈnɑməˌnɑn/
Frequency rank: #3,575 most common English word
Meaning
An event or fact that can be observed, especially an unusual one.

Example sentence
The northern lights are a beautiful natural phenomenon that many people travel to see.
Synonyms & related words
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More words in ranks 3,501–3,600
- mereNothing more than; only; small and unimportant.
- miracleA wonderful event that seems impossible and cannot be explained.
- mudWet, soft earth.
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- preciseExact and accurate in detail.
- professionA type of job that needs special education or training.
- prospectA chance or possibility that something good will happen.
- protectiveWanting to keep someone or something safe from harm.