guāi​guāiguāi​guai

well-behaved

乖乖 guāi​guāi frequency
well-behaved adverb
behaving in an obedient or well-behaved manner, typically used for children

He sat there reading obediently.

darling noun
a term of endearment used for a child or a loved one; sweetie

乖乖我们回家

guāi​guāi, wǒ​men gāi huí​jiā le.

Be good, dear, it's time for us to go home.

乖乖 guāi​guai
gracious noun
An exclamation expressing surprise or amazement; goodness gracious!, oh my lord!

乖乖

guāi​guai! zhè zhǎng de zhēn .

Good heavens! This fish is huge.

Frequency

Movie subtitles
20.2 per million appears in 8% of films
Written text
14.2 per million

Sources

Definitions
CC-CEDICT