literature

神髄, 真髄: (figurative): The spirit or soul of something: its essence, its true quality. / 心髄: The marrow or core of something. / 神瑞: A good omen.

(figurative): The spirit or soul of something: its essence, its true quality.

文学: literature

(figurative): The spirit or soul of something: its essence, its true quality.

神学: theology / 進学: going on to university / 心学: Edo-period popularized blend of Buddhist, Shinto and Confucian ethical teachings

心理学: psychology

straightforwardly, wholeheartedly, unreservedly, directly, immediately, all at once, in one go

(archaic) exactly that, directly or immediately that

(dialect, Hakata) frightening; scary