Used other than as an idiom: see as, soon.(conjunction)
At the moment when; immediately after.(conjunction)
Used other than as an idiom: see as, soon.(preposition)
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Use "as soon as" in a sentence
"Grant Westfield, having finished dismantling the Liebherr, joined him in the screening room, and a disturbing look crossed his face as soon as he saw the video."
"After your activity, it's important to rehydrate as soon as possible within 30 minutes, he advised."
"But as soon as he walked off, Stuey and Sexton looked around and saw Melissa Hayden, one of the strongest women poker players in the world at the time."