sisäpuoleltaan
Sisäpuoleltaan is a Finnish adverb that translates to "from the inside" or "internally". It is formed by combining the word "sisä-" meaning "inner" or "internal" with the adessive case ending "-ltä" which indicates origin or source. The word is used to describe something that originates from within, either physically or metaphorically.
For example, in a physical sense, one might say that a house is well-insulated sisäpuoleltaan, meaning it