sairastut

Sairastut is a Finnish verb form meaning "you fall ill" and is the second-person singular present indicative of sairastua, the verb that means "to become ill" or "to contract an illness." The base infinitive is sairastua. The verb is intransitive and refers to the onset of illness rather than a direct action on an object.

Conjugation in the present tense (indicative) is: minä sairastun, sinä sairastut, hän sairastuu, me sairastumme, te sairastutte, he sairastuvat. Therefore, sairastut specifically corresponds to the second-person singular present form.

Usage and nuance: sairastua describes becoming sick, often temporarily. It is commonly used with illnesses expressed as nouns in forms such as illative to indicate what is contracted, for example, flunssaan (a cold) or virukseen (a virus). Examples: "Jos sinä sairastut, pysy kotona." "Hän sairastuu usein talvisin." The verb appears in everyday language and in medical or administrative contexts when noting someone's health status.

Etymology: sairastua is formed from the adjective sairas (sick) with a derivational suffix that conveys a process of becoming. The resulting verb denotes the onset of sickness rather than the sustained condition.

Related terms: sairastaminen (the act of falling ill), sairastuneisuus (illness status), and the noun sairastuminen is occasionally used to refer to the event of becoming ill.

In summary, sairastut is the second-person present form of a common Finnish verb for describing becoming ill, part of everyday health-related language.