pystyessä

"Pystyessä" is a Finnish word that functions as an adverbial participle. It is derived from the verb "pystyä," which means to be able to, to be capable of, or to manage. The "-essä" ending signifies a form of the inessive case, indicating a state or condition.

Therefore, "pystyessä" literally translates to "while being able to" or "in the state of being capable." It is used to express that something happens or is done concurrently with the ability or capacity to do so. For example, one might say "Hän teki sen pystyessä" which translates to "He did it while he was able to" or "He did it as long as he could."

The word emphasizes the existence of the capability at the time of the action. It is not about the act of becoming able, but rather about performing an action during the period when the ability exists. This participle form adds a nuanced temporal and conditional aspect to the sentence, highlighting the ongoing or existing capacity that permits the action. It is a common construction in spoken and written Finnish, contributing to the language's rich grammatical flexibility.