Inessiivisuffiksin
Inessiivisuffiksin is a grammatical suffix used in some languages, primarily Finnic languages like Finnish and Estonian. It denotes the locative case, specifically indicating a state of being or existence *within* a place. Think of it as answering the question "where is something?" when the answer is "inside."
In Finnish, the inessive suffix is typically "-ssa" or "-ssä", depending on vowel harmony. For example, "talo"
Estonian uses a similar concept, often expressed with the suffix "-s" which attaches to the genitive form