Anomalous (adjective)

1. Deviating from what is standard, normal, or expected.
2. Not conforming to the general rule or to an accepted model or pattern.

Origin:

From the greek ἀνώμαλος, anōmalos, meaning "irregular" or "deviating from the norm".

Examples:

1. The results of the experiment were anomalous and could not be explained by the current theory.
2. The behavior of the stock market has been anomalous in recent months.
3. The reading on the instrument was anomalous and did not match the expected results.
4. The weather this year has been anomalous, with temperatures much higher than usual.
5. The patient's condition was anomalous and required further investigation.