tõsiseks
Tõsiseks is an Estonian word that translates to "serious" or "seriously" in English. It is primarily used as an adjective to describe a person, situation, or manner that is grave, solemn, or not to be taken lightly. For example, one might say a person has a "tõsiseks" expression, indicating they are not smiling or joking. Similarly, a "tõsiseks" matter is one of importance that requires careful consideration and a lack of frivolity.
The word can also function as an adverb, modifying a verb or adjective to emphasize the gravity