at once, immediately, without delay, promptly
Example sentences
早速本題に入るけど、飲み会の件なんだ。今週の金曜日あいてるかな。
Anyway, to get to what I wanted to ask you...it's about the party. Are you free Friday?
マスコミが彼の婚約の噂を嗅ぎつけ早速駆けつけた。
The media got wind of a rumor about his engagement and came quickly.
彼女はベストセラーの小説を早速読んだ。
She lost no time in reading a best-selling novel.