物知 ものし
monoshiri

Noun

1. well-informed person; walking dictionary; extensive knowledge

きみ たしかに物知 ものしりだが、それを おしえるのはうまくない。
kimiwa tashikani monoshiridaga soreo oshieru nowa umakunai.
Indeed you know a lot of things, but you're not good at teaching them.
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