ytimissään
Ytimissään is a Finnish concept that translates roughly to "at its core," "in essence," or "fundamentally." It refers to the most important, central, or essential part of something, stripping away all extraneous details or superficial aspects to reveal the true nature or meaning. When something is described as being "ytimissään," it means that its core characteristics or principles are being highlighted or considered.
The term can be applied to a wide range of subjects, from abstract ideas and philosophical concepts
Understanding something "ytimissään" implies a deep comprehension, a grasping of its innermost workings or most significant