Final answer:
The word "boisterous" most likely means rowdy.
Step-by-step explanation:
The word "boisterous" most likely means rowdy. It is used to describe a celebration that is loud, energetic, and full of noise and excitement. In the given sentence, the office's celebration is described as boisterous because it involves cheering, shouting, and laughter, which caused other businesses to shut their doors.
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