哄堂大笑

hōng táng dà xiào

the whole room bursts out laughing

Character by character

哄hōng
uproar

堂táng
hall

大dà
big

笑xiào
laugh

他的一句话让全班哄堂大笑。

One remark from him had the whole class in stitches.

Tone: neutral.

哄 is hōng here, and the subject is always a group.

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