横道

1. Origins, structure, and basic meaning

• Structure: 横道, read よこみち, denotes a side road or a departure from the main subject.
• Basic usage: In 話が横道にそれたので、最初の議題に戻そう。, the conversation has digressed, prompting a suggestion to return to the original topic.

2. Common pitfalls and similar expressions

• Road and conversation
  • 横道に入った describes entering an actual side road. 話が横道にそれた figuratively describes a conversation straying from its main topic.