epätavallisiksi
Epätavallisiksi is the genitive plural form of the Finnish adjective epätavallinen. The base word, epätavallinen, translates to "unusual," "uncommon," or "rare" in English. Therefore, epätavallisiksi in its genitive plural form would be used in contexts where one is referring to "of unusual things" or "of uncommon ones." For example, it might appear in a sentence discussing the characteristics of various rare items or the reasons behind uncommon phenomena.
The genitive case in Finnish, particularly in the plural, often indicates possession, origin, or a partitive