Synonyms for Soon:

adj.

early (adjective)
early, promptly.

adv.

in the near future (adverb)
before long, directly, early, forthwith, in due time, presently, promptly, quickly, shortly.
soon (adverb)
before long, directly, in due time, presently, quickly, shortly, in a while.

adv

early (adverb)
before long.
soon (adverb)
before long, directly, in due time, presently, shortly, in a while.

n.

close, forthwith, imminent, just, quickly, someday, around the corner, any day/moment etc. now, at the earliest/first opportunity, in no time (at all), in the short run/term. early (noun)
early, promptly.
in the near future (noun)
before long, forthwith, in due time, presently, quickly, shortly, in a while.

Other synonyms:

just. early. close. Other relevant words:
before long, early, forthwith, just, promptly, quickly, someday.

Usage examples for soon

  1. Won't you come over soon and see us? – Frank's Campaign or the Farm and the Camp by Horatio Alger, Jr.
  2. As soon as I have found them I will come back. – Old Peter's Russian Tales by Arthur Ransome
  3. That's why I have come again so soon – Will Warburton by George Gissing