(sports) a type of elimination playoff series that is a single-game series, to decide who wins the playoff round

Third-person singular simple present indicative form of one-up

Used to emphasize the truth of a characterization

One-upmanship among women.

(finance) Being or relating to a kind of exotic option that pays out if an asset reaches or passes a certain price at any point during the relevant period.

The ideology that all of the countries of the world are essentially similar and could interoperate without conflict.

In a watchful state; alert; vigilant.

present participle of one-up

(mathematics, logic, of a relationship between two sets) having the property that many elements of one set may be assigned by the relationship to one element in the other set, and that a given element in the first set can be assigned by only one member of the second set.

(mathematics, of a function) Having the property that the same argument may yield multiple values, but different arguments never yield the same value.