急きゅう拡かく大だい

noun, noun or participle which takes 'suru', transitive verb, intransitive verb

rapid expansion; rapid growth; sharp increase

Used for sudden, large-scale growth or spread in business, scale, influence, or physical extent. Can be used both transitively and intransitively.

• 会かい社しゃの海かい外がい事じ業ぎょうが急きゅう拡かく大だいした。

  The company's overseas operations expanded rapidly.

• 感かん染せんが急きゅう拡かく大だいするのを防ふせぐ。

  Prevent the infection from spreading rapidly.