しゅうい
circumference, surroundings
Everyone inside earshot, which at that volume is the entire room. Shoo しゅう them out and they would still hear you: しゅうい.
The people and things around you. 周り まわり is the everyday word for the same idea.
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Emaki is not affiliated with, or endorsed by, Kaishi 1.5k or its authors. The word, reading and meaning come from the Kaishi 1.5k deck, used with their permission. The mnemonic, the note and the kanji breakdown are original work, published under CC BY-SA 4.0.