Töölö

Etymology
From, but it is which language is the ultimate source. If the name is originally Swedish, the name may derive from, perhaps originally with rather than , or from. If the name is of Finnish origin, it may derive through Swedish from some derivative of, such as , derived from +  (old form of ) and literally meaning "arduous bay", i.e. "bay that is hard to traverse".

Proper noun

 * , consisting of two neighborhoods: and.

Declension
Locally, the illative form is occasionally used in colloquial language, especially when pronouncing the final  long and stressed.