dissimulate
🇺🇸
/dɪˈsɪmjuleɪt/
🇬🇧
/dɪˈsɪmjuleɪt/
To pretend not to have certain feelings or intentions, even though you really do.
He tried to dissimulate his anger, but his red face gave him away.
彼は自分の怒りを隠そうとしたが、赤い顔が彼を売ってしまった。