Yomi
うんちく
Rōmaji
unchiku
Type
noun
Meaning
a trivia; unimportant and niche knowledge
Synonym
トリビア, 雑学
Additional Info
トリビア (trivia) is also used with a similar meaning, but ウンチク tends to have a more negative connotation as it is more strongly associated with people who proudly talk at length about their knowledge about something niche they love.
It is also written in hiragana うんちく or less commonly in kanji 蘊蓄.
Example
彼と寿司屋に行った時、寿司のウンチクを長々と語ってきてウザかった
When I went to a sushi restaurant with him, he talked at length about his knowledge of sushi and that was annoying.
