herätessään
Herätessään is a Finnish word that translates to "upon waking" or "when waking up" in English. It is the elative case of the present active participle of the verb herätä, which means "to wake up" or "to awaken." The elative case in Finnish indicates movement out of or from something, so in this context, it signifies the transition from sleep to wakefulness.
The phrase "herätessään" is commonly used to describe actions or events that occur immediately after someone