揚げ足

1. Origins, structure, and basic meaning

• Structure: 揚げ足 is a noun read あげあし, used chiefly in 揚げ足を取る for seizing on a slip or nitpicking someone's wording.
• Basic usage: Use 言い間違いの揚げ足を取る for picking on a verbal mistake and 揚げ足を取ってばかりいる for doing nothing but nitpick.
  • 言い間違いの揚げ足を取るのはやめよう。 urges people to stop seizing on slips of the tongue; 相手の揚げ足を取ってばかりいては議論が進まない。 says that discussion cannot progress if one keeps nitpicking the other person's words.

2. Common pitfalls and similar expressions

• 揚げ足を取る
  • This idiom means exploiting a small verbal error or weakness, not literally taking hold of a foot.
• 取ってばかりいる
  • ばかり presents nitpicking as the action being repeated to the exclusion of useful discussion.
• いては進まない
  • ては sets the continued behavior as a negative condition preventing progress.