即効(そっこう)

そっこう
noun
immediate effect; instant efficacy
abstract
1. immediate effect; instant efficacy
An effect or result that appears right away, without delay. Often used about medicines, remedies, or solutions that work quickly.
この薬(くすり)は即効(そっこう)がある。
This medicine takes effect immediately.
即効性(そっこうせい)のある対策(たいさく)が必要(ひつよう)だ。
We need a measure that takes effect immediately.
この方法(ほうほう)には即効(そっこう)が期待(きたい)できないが、長期的(ちょうきてき)には効果(こうか)がある。
You can't expect immediate results from this method, but it is effective in the long term.

Describes an effect that appears instantly or very quickly. Most commonly encountered in the compound 即効性(そっこうせい) (immediate effectiveness).

Common collocations

Similar words

  • 速効(そっこう): same reading and very similar meaning — sometimes used interchangeably, but 速効(そっこう) emphasizes speed while 即効(そっこう) emphasizes immediacy
  • 効果(こうか): effect, efficacy — general term without the 'immediate' nuance

Related Words

Compare: 効果(こうか) (effect, efficacy)
general
Added 2026.3.25 15:05 · Revised 2026.9.2 13:01
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