noun, noun which may take the genitive case particle 'no'
profound loneliness; deep solitude
A formal, literary term for a deep, often poetic sense of loneliness or solitude. Not used in everyday conversation.
His poetry is filled with a sense of profound loneliness.
I am seized by a feeling of deep solitude.
Compound of 孤 (solitary, alone) and 愁 (grief, sorrow). The exact historical derivation is uncertain, but the combination conveys a literary sense of deep, solitary sorrow.