重箱の隅をようじでほじくる
じゅうばこのすみをようじでほじくる
juubakonosumiwoyoujidehojikuru
JMdict entry #2524640
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expressions (phrases, clauses, etc.)Godan verb with 'ru' ending
idiomatic expression
to nitpick; to complain about trifles
see: 重箱の隅をつつく