JMdict: 2779510

尻尾を掴む 【しっぽをつかむ】

  1. [exp,v5m] 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
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
Buttocks, Hips, Butt, Rear コウ しり
Tail, End, Counter For Fish, Lower Slope Of Mountain
Catch, Seize, Grasp, Hold, Arrest, Capture カク つか.む, つか.まえる, つか.まる