急騰

1. Origins, structure, and basic meaning

• Structure: 急騰 is read as きゅうとう and is a noun and する verb for a price, rate, or value rising very sharply in a short period.
• Basic usage: Raw-material prices soaring appears in 原料の価格が急騰する, while lodging rates currently surging appears in 宿泊料金が急騰している.

2. Common pitfalls and similar expressions

• Completed change and ongoing rise
  • Use 急騰する for the sharp-rise event and 急騰している for a rise currently continuing.
• Difference from 上昇
  • Compared with the general word for an increase, this term emphasizes exceptional speed and magnitude.