Anomalous

The general theory of relativity explains the anomalous perihelion precession of the planet Mercury.

The pilots were confused by the seemingly anomalous readings of their instruments.

The SCP Foundation contains and studies anomalous entities.

The study focuses on hurricanes and anomalous heat in the Caribbean.

statistically anomalous

highly anomalous

The scientist noted an anomalous result in the data.

His behavior was anomalous given the circumstances.