unctuously
🇺🇸
/ˈʌŋktʃuəsli/
🇬🇧
/ˈʌŋktʃuəsli/
adverb
R
in a way that is overly polite or flattering in a fake and disgusting manner
He unctuously complimented her on her new dress, but she could tell he didn't mean it.
彼は彼女の新しいドレスを過剰に褒めたが、彼女は彼が本気ではないことを見抜いていた。
translation
油断なく