扫兴
sǎo xìng · HSK 7
to have one's spirits dampened
🧹 扫 sweep + 兴 mood = sweep the good mood away, leaving you let down
扫 (sǎo) is the same sweep as in 扫地 to sweep the floor; 兴 (xìng) is the mood or excitement of 高兴 happy. Together they mean someone swept your fun right out the door, so spirits sink.
扫 — hand radical 扌 + broom 帚
A semantic compound: the hand radical 扌 shows the action, while 帚 (broom) gives both the meaning and an approximate sound. The original picture of 帚 depicts a broom held upright, so 扫 literally means 'to wield a broom,' i.e. to sweep.