Definition
to disclose information to others, particularly when it is confidential.
洩漏；透露（隱秘）
He let on about the secret at the party, but I hope you won't let anyone else know.
他在派對上洩漏了這個秘密，但我希望你不要讓其他人知道。
She always lets on some office gossip, which makes it hard to trust her.
她總是透露一些辦公室八卦，這讓人很難信任她。
I don’t want to let on my plans to him; I will keep it confidential.
我不想向他透露我的計劃；我會保密。