-ness; -like quality; essence of
Attaches to nouns (often people, brands, or concepts) to express the distinctive character, spirit, or typical quality of that thing. Similar to English '-ness' or '-like quality', but more about capturing the core identity.
His work has that unmistakable Haruki Murakami quality.
While cherishing what makes this shop special, I also want to introduce new menu items.
Derived from the adjective suffix らしい by adding the nominalizer さ, forming a noun meaning 'the quality of being like ~'.