An immediate reply; answering a question or prompt without delay.
彼は面接で質問に即答した。
He answered the questions immediately in the interview.
そんな難しい問題に即答できる人は少ない。
Few people can answer such a difficult question immediately.
上司の問いに彼女はためらわず即答した。
She replied to her boss's question without hesitation.