viheltävinä
Viheltävinä is a Finnish word that functions as the plural adessive case of the word "viheltävä." "Viheltävä" itself is an adjective derived from the verb "viheltää," meaning to whistle. Therefore, "viheltävinä" literally translates to "as whistling" or "while whistling" in a plural context.
In Finnish grammar, the adessive case typically indicates location on a surface, possession, or the instrument
For example, one might encounter "linnut viheltävinä puussa," which could be interpreted as "the birds in the