lõpmatut

Lõpmatut is the partitive singular form of the Estonian adjective lõpmatu, meaning "infinite" or "endless." In Estonian grammar, lõpmatut is used to modify a noun in the partitive case, typically to express an indefinite or boundless extent or quantity.

The word reflects the idea of without end. It is commonly found in phrases describing quantity or duration without a defined limit, such as lõpmatut aega or lõpmatut vaeva, where aega means time in the partitive and vaeva denotes effort or trouble in a partitive sense. These usages convey a sense of vastness or limitless continuity rather than a precisely defined amount.

In mathematical and formal contexts, the noun lõpmatus is used to denote infinity, while lõpmatu and its inflected forms (such as lõpmatut) function within ordinary Estonian grammar to describe things that are conceptually unbounded, rather than naming the abstract concept itself.

Compared with lõpmatus, which names the abstract notion of infinity, lõpmatut operates as an attributive form tied to a noun within a sentence. This distinction helps differentiate linguistic use from mathematical terminology in Estonian.

See also: infinity (lõpmatus) in Estonian; Estonian grammar and adjective inflection; examples of indefinite extent in Estonian phrases.