näppäimensä

Näppäimensä is a Finnish word that translates to "its key" or "his/her key" depending on the context. It is the possessive form of the word "näppäin," which means "key." The suffix "-nsä" indicates a third-person possessive, referring to something belonging to someone or something else.

For example, if one were discussing a lock, "lukon näppäimensä" would mean "the lock's key." If the sentence were about a person, "hänen näppäimensä" would mean "his/her key." The word is commonly used in everyday Finnish conversation and writing when referring to ownership of a key.

The grammatical function of "näppäimensä" is to show possession. It is a genitive form combined with a possessive suffix. Understanding this construction is key to comprehending Finnish grammar, particularly when dealing with ownership or association. The word itself is relatively straightforward in its meaning, but its correct usage depends on understanding the grammatical context.