Don't let on that you know about the surprise party
He tried to let on that he was feeling better, but his cough gave him away
She was good at keeping secrets and didn't let on about her new job
The children were told not to let on that they had seen the hidden cookies
He didn't want to let on how much the comment had hurt him
They pretended not to notice, but I think they could tell I was upset
Despite his efforts, the interviewer managed to let on that he knew about her previous failures
The spy was trained to never let on his true identity
She was so excited about the gift, it was hard for her to let on
He finally let on that he had been planning the proposal for months
Did you let on about the surprise party?
No, I promised not to let on to anyone.
Good. We want it to be a surprise.
Don't reveal that you know about the surprise party
Don't show you are aware of the surprise party