This is the 5361st most frequent Japanese word.
pronto
The Japanese word "pronto" is borrowed directly from Italian and means "quickly" or "right away" in English.
In this sentence, '早く' conveys the idea of promptness in the context of preparing quickly.
彼は出来るだけ早く準備をした。
He prepared as promptly as possible.
Here, '迅速に' translates to 'promptly' emphasizing the urgency and immediate action needed.
明日の会議の準備を迅速に行う必要があります。
It is necessary to promptly prepare for tomorrow's meeting.
The word '迅速に' again conveys promptness, focusing on a quick reaction to a situation.