päivystänyt

Päivystänyt is the past active participle of the Finnish verb "päivystää." The verb "päivystää" means to be on duty, to be on call, or to stand by, often in a medical or emergency services context. Therefore, "päivystänyt" describes a person or entity that has performed this action. It translates most directly to "having been on duty" or "who was on call."

The word is used in Finnish to indicate that someone has completed the act of being on duty. For example, "Lääkäri oli päivystänyt koko yön" translates to "The doctor had been on duty all night." In this context, "päivystänyt" refers to the doctor's past action of being available and working outside of normal hours. It can also be used more generally to describe a period of being on standby for any service. The participle can modify a noun or be used predicatively. Its grammatical form will change depending on the case and number of the noun it modifies, though the base form "päivystänyt" is the singular nominative.