Meaning of huài huà:
huài huà
坏话
Noun
unpleasant talk; malicious words
Tā zǒng shì zài bèihòu shuō biérén de huàihuà.
他总是在背后说别人的坏话。
He is always talking badly about others behind their backs.
Wǒmen bù yīnggāi zài bèihòu shuō huàihuà.
我们不应该在背后说坏话。
We should not speak malicious words behind others' backs.