estettävän
The word "estettävän" is a Finnish grammatical form. It is the genitive plural form of the passive present participle of the verb "estää" (to prevent, to hinder, to block).
In Finnish grammar, participles are verb forms that function like adjectives or adverbs. The passive present
The genitive case in Finnish often indicates possession, origin, or serves as an object of certain prepositions
Therefore, "estettävän" translates to "of that which is to be prevented" or "of those things which are