na-adjective, noun
well-informed; erudite
Describes a person with broad knowledge, often used in formal or literary contexts. Can be used as a noun or adjectival noun.
彼は博聞な学者として知られている。
He is known as a well-informed scholar.
博聞の士は多くの分野に通じている。
A person of wide knowledge is versed in many fields.