noun, noun which may take the genitive case particle 'no'
knowledgeable about Japan; well versed in Japanese affairs
Often used in political, diplomatic, or academic contexts to describe a person or stance that is well-informed about Japan. Can be used attributively with の.
彼は知日派の政治家として知られている。
He is known as a politician who is knowledgeable about Japan.
知日家の間でこの本は高く評価されている。
This book is highly regarded among those well versed in Japanese affairs.