しっぽをつかむ

尻尾を掴む

表記・読み：尻尾をつかむ・しっぽを掴む・しっぽをつかむ

1. 1

   to have something on someone; to catch someone out; to trip someone up; to find someone's fault; to get evidence on someone; to get a lead on someone; to grab by the tail

   expressions (phrases, clauses, etc.)五段動詞（む）idiomatic expression