1.
essence, quintessence, true nature
The most important or fundamental quality of something, especially of an art, discipline, or tradition. Often used when speaking about the core spirit or deepest meaning.
Usage
A somewhat literary or elevated word. Often used when discussing arts, philosophy, traditions, or disciplines. The phrase ～の真髄 (the essence of ~) is the most common pattern.
Writing
真 means "true" and 髄 means "marrow" (as in bone marrow). The compound literally means "true marrow," metaphorically referring to the innermost core of something.
Common collocations
Related Words
Compare:
本質 (essence)