eilääkkeellisesti

Eilääkkeellisesti is a Finnish adverb that translates to "yesterday's" or "pertaining to yesterday" in English. It is formed by combining the word "eilen" (yesterday) with the possessive suffix "-ää" and the adverbial suffix "-llisesti". The adverbial suffix "-llisesti" indicates that the word functions as an adverb, describing when or how something happened or was.

This word is used to refer to something that is related to or happened on the previous day. For example, one might say "eilääkkeellisesti järjestetyt asiat" which means "things organized yesterday". It can also be used to describe a feeling or state that existed yesterday, such as "eilääkkeellisesti olin väsynyt" meaning "yesterday I was tired". While "eilen" is the more common way to simply state that something happened yesterday, "eilääkkeellisesti" adds a nuance of possession or a specific focus on the yesterday aspect when referring to a subsequent event or state. Its usage is relatively infrequent in everyday conversation, often appearing in more formal or descriptive contexts.