psyykkisiksi
The term "psyykkisiksi" is the genitive plural form of the Finnish word "psyykkinen," which translates to "psychological" or "mental." Therefore, "psyykkisiksi" refers to the psychological or mental aspects of something in its plural genitive case. This grammatical form is used to indicate possession or relation to multiple psychological qualities, states, or processes.
For instance, one might discuss the "psyykkisiksi tekijöiksi" (psychological factors) influencing a person's behavior, or the