Läbimatu is an Estonian adjective that translates to "impenetrable," "impermeable," or "impassable" in English. It is used to describe something that cannot be passed through, entered, or understood. The term can be applied to physical barriers, such as a thick forest that is läbimatu to travelers, or a dense fog that makes a road läbimatu. It can also refer to abstract concepts, like a complex text that is läbimatu to the average reader, or a person's emotions that are läbimatu and difficult to discern. In a more figurative sense, läbimatu can describe a situation that is unresolvable or a problem that is unsolvable. The specific nuance of meaning depends heavily on the context in which the word is used. It implies a complete lack of passage or comprehension.