1.
extensive knowledge, accumulated expertise, deep learning on a subject
A deep store of knowledge on a particular subject, accumulated through study and experience. Often used in the expression 蘊蓄を傾ける (to display one's expertise). In modern casual usage, can also refer to impressive trivia or detailed knowledge someone eagerly shares.
彼はワインの蘊蓄がすごい。
He has an incredible depth of knowledge about wine.
料理の蘊蓄を傾けて語り始めた。
He began holding forth, displaying all his expertise on cooking.
飲み会で日本酒の蘊蓄をたれる人がいて、ちょっとうんざりした。
There was someone at the drinking party who kept going on about sake trivia, and I got a little tired of it.
USAGE:
Originally a positive term for deep, accumulated knowledge, but in casual modern Japanese, 蘊蓄をたれる or 蘊蓄を語る can carry a mildly negative nuance of someone showing off obscure knowledge or boring others with excessive detail.
KEY PATTERNS:
- 蘊蓄を傾ける: to display one's extensive knowledge (literary, positive)
- 蘊蓄をたれる: to bore others with one's expertise (casual, mildly negative)
- 蘊蓄を語る: to expound on one's knowledge
COMMON COLLOCATIONS:
- 蘊蓄がある: to have deep knowledge
- 蘊蓄が深い: to have profound expertise