vähentyi

Vähentyi is the third-person singular past tense form (imperfect indicative) of the Finnish verb vähentyä, meaning to decrease or diminish. It indicates that something decreased during a specified past period, for example: "myynti vähentyi viime vuonna" (sales decreased last year). Vähentyä is an intransitive verb that describes a change of state rather than an action performed on another object.

In usage, vähentyi is common in statistics, economics, demography, and descriptions of natural phenomena, where quantities, levels, rates, or intensities decline. It is used when the subject undergoes the decrease, without implying that the subject is actively causing the change to another object. It contrasts with vähentää, a transitive verb meaning to reduce or cut something.

Related forms include the noun vähentyminen, referring to the decrease itself, and the broader family around vähentää, which means to reduce something. Etymologically, vähentyä is linked to the root of vähentää (to reduce), with the intransitive form indicating a state change rather than an agent-caused action.

Summary: vähentyi is a Finnish past tense form used to describe that a quantity or level decreased in the past, and it is typically found in factual or analytical contexts such as reports, articles, and statistical summaries.