confidentially
🇺🇸
/ˌkɑːnfɪˈdenʃəli/
🇬🇧
/ˌkɒnfɪˈdenʃəli/
adverb
R
Speaking in a way that keeps something a secret.
She told me confidentially that she is going to retire early.
彼女は、早く定年退職する予定だと私に内々に話しました。
translation
内々に