- Deviating from what is normal, typical or expected.
- An occurrence or data point that falls outside of the regular pattern or anticipated parameters.
- An event, value or observation that is an outlier when compared to the standard distribution or baseline.
- Something that is remarkably uncommon or improbable when examined against the established tendencies or accepted norms.
- A phenomenon or measurement that is anomalous – distinctly different from the regular, characteristic or predictable behavior.