애교
sawɒn dʒaɪəɹəwɒn sawɒndʒɪɐwɒnəʊ tʊ akt spɔɪld bʌt iːdʒɪəʊ ɪz bɹɔːdə and ɪŋkluːdz pleɪfəl kjuːt ɛkspɹɛʃənz
In Chinese 撒娇 (sājiāo) - to act spoiled, but 'aegyo' is broader and includes playful, cute expressions.
The display of charming and endearing behavior, often in the form of cute gestures, voices, or actions, used to express affection or gain favor.
Example
"그녀는 애교가 많아서 인기가 많아."