Synonym: before long, directly, presently, promptly, quickly, shortly. Antonym: late. Similar words: and so on, as soon as, sooner or later, as soon as possible, go on, noon, no one, spoon. Meaning: [suːn] 
adv. in the near future.
adv. in the near future. 271. The boy rushed off as soon as his father gave him permission.
More similar words: and so on, as soon as, sooner or later, as soon as possible, go on, noon, no one, spoon, cartoon, balloon, teaspoon, a blue moon, tablespoon.