Short in length of time from the present.
"The bus arrives soon, so you don't need to wait long at the stop."
In plain English: Soon describes something that will happen very shortly after now.
"The soon possible time is next Monday."
Usage: Use soon as an adjective only before nouns like "arrival" or "future," never after them, to describe something happening shortly ahead. It is often confused with the adverb form when modifying verbs, so ensure you place it correctly based on whether it describes a time period or an action.
in the near future
"the doctor will soon be here"
"the book will appear shortly"
"she will arrive presently"
"we should have news before long"
Immediately, instantly.
"The lights flickered and went out right away as soon as I flipped the switch."
In plain English: Soon means happening or expected to happen very shortly.
"The train will arrive soon."
A surname.
"The family tradition dictates that anyone born under the name Soon must wear red on their wedding day."
Soon comes from the Old English word sōna, which originally meant "immediately" or "at once." The term traveled into Modern English while retaining this sense of immediacy.