湯加減

1. Origins, structure, and basic meaning

• Structure: 湯加減, read ゆかげん, denotes how hot or cool water is for bathing or washing.
• Basic usage: It names bathwater temperature checked by hand and judged comfortable by a grandmother.

2. Common pitfalls and similar expressions

• Perceived suitability rather than a number alone
  • It commonly evaluates whether water feels suitably hot or cool for bathing or washing, not only its numeric temperature.