How to say "knowledgeable" in Japanese

• 詳しいくわしいJLPT N3approx.Common
  i-adjectiveCovers the 'knowledgeable (about)' sense: knowing a particular subject or field very well and being well-informed about it. The word to use when you want to say someone is knowledgeable about a specific topic.
  このあたりはお詳くわしいですか。↗

  Are you familiar with this area?
• 博識はくしきCommon
  na-adjectiveCovers 'knowledgeable' in the sense of learned and erudite: a person whose knowledge is broad and deep across many subjects. It describes the person as a whole rather than knowledge of one particular topic.

Use 「詳しい」 when someone knows a particular subject well, and 博識 when describing a person of broad, erudite learning who is well-informed across many fields rather than about one topic.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 知識豊富ちしきほうふknowledgeable
• 強いつよいgood (at)
• 詳しいくわしいknowing very well
• 博識はくしきlearned
• 明るいあかるいknowledgeable (about)