プログレッシブ英和中辞典(第5版)の解説
soon
/súːn/
1 もうすぐ，まもなく，そのうちに，近いうちに
He will be back pretty soon.
彼はもうまもなく戻るでしょう
See you soon!
またね！
How soon can we get there?
あとどれくらいで向こうに着くのかな
2 早く，すみやかに
How soon will I hear from you?
いつ［どれくらい早く］ご連絡いただけますか
it is too soon to tell if ...
…かどうか言うのは早すぎる
The sooner, the better.
早ければ早いほどよい
the soonest possible date
できるだけ早い期日（◆earliest のほうがふつう）
3 ((方言))（特定の時間帯の中で）早めに
soon in the morning
朝早いうちに
as soon as ...
…するとすぐに
We started as soon as we heard about the accident.
事故の知らせを聞いてすぐ出発した
I will ask him as soon as I see him.
彼に会ったらすぐ聞いてみる
as soon as maybe [may be]
＝as soon as possible
as soon as one can
＝as soon as possible
as soon as possible
できるだけ早く（◆メモ・Ｅメールなどで ASAP または asap と略記される）
at the soonest
（いくら）早くても
none too soon
やっとのことで，ようやく
no sooner ... than ...
…するとすぐに…（◆as soon as の意味に加え驚きを表し，より強意的）
We had no sooner sat down to dinner [No sooner had we sat down to dinner] than the doorbell rang.
夕食の席に着くとすぐに玄関のベルが鳴った
no sooner said than done
ただちに，あっというまに（やり終えて）
sooner or later＝soon or late
遅かれ早かれ，早晩
sooner rather than later
遅かれ早かれ；いつかは
so soon as ...
＝as SOON as ...
would (just) as soon ... (as not)
((略式))どちらかといえば…したい
I would (just) as soon stay home as not.
どちらかといえば家にいたい
would sooner ... (than ...)
（…するよりも）むしろ…したい，いっそ…したい
She would sooner starve than eat meat.
彼女は肉を食べるくらいなら餓死を選ぶ人だ