HSK 7-9
美滋滋
měizīzī形
very happy; elated
小王拿着奖状心里美滋滋的。
Xiǎowáng ná zhe jiǎngzhuàng xīnlǐ měizīzī de.
Xiao Wang felt delighted as he held his certificate.
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Appears across levels (7-9) in the HSK 3.0 word list.