Underover

Underover is a term used in English to denote dual possibilities related to under and over a reference value, limit, or outcome. It is not a single, widely standardized concept; its precise meaning depends on the field and context.

In sports gambling, the standard term is over/under, which refers to bets on whether a given statistic (such as total points in a game) will be over or under a published line. In casual writing, underover may appear as a shorthand to discuss both under and over outcomes, or to describe a line that encompasses both possibilities, but it is not formal odds terminology in most jurisdictions.

In quality control and measurement, underrun and overrun describe deviations where a measured value lies below the lower specification limit or above the upper specification limit, respectively. The notion of an underover can thus be used to discuss all instances where a value violates tolerance, regardless of direction.

In computing and data analysis, the term has appeared in discussions of thresholds, bounds, or sampling, where data may fall beneath or exceed a defined limit, triggering distinct handling rules. The term is less common in formal standards in these areas and tends to appear in colloquial or cross-disciplinary writing.

Because the term spans multiple domains, readers should consult discipline-specific sources to determine the exact meaning in a given context. See also over, under, over/under, underrun, and overrun.