reserved
🇺🇸
/rɪˈzɜːrvd/
🇬🇧
/rɪˈzɜːvd/
adjective
R
quiet and not showing feelings or opinions
He is very reserved and doesn't talk much in groups.
彼はとても控えめで、グループではあまり話しません。
translation
内向的、無口な