soon 2022.12.06 soonとは 意味・定義・例文 Adverb 副詞 1. in a short time from now まもなく She will soon be here. 2. quickly すぐに She begun to study soon after supper. idiom 1. 〔as soon as〕 just after; not later than すぐに They ate as soon as the food set on the table.