唾

1. Origins, structure, and basic meaning

• Structure: 唾(つば) is an everyday word for saliva or spit.
• Basic usage: It describes repeatedly swallowing saliva with a mouth dry from nervousness.
  • 緊張で口が乾き、唾を何度も飲み込んだ。

2. Common pitfalls and similar expressions

• Everyday and technical wording
  • 唾を飲み込む is an everyday expression for swallowing saliva. Medical tests or physiological descriptions also use the more technical term 唾液(だえき).