He knew where his brother was going, but he didn't let on.
I did. Don't let on, though, will you? Perhaps we can have a little fun with him.
At least they let on that relationships have problems.
I remember when you played a netball on your first serve, and a let on your second.
And they knew more television than they let on.
Then, holding out her arm, she let one drop fall from it on the snow beside the sledge.
Everybody knows--the widow, too, for all she tries to let on she don't.
The shop be let on very favourable term .
The Volunteers were in the bush all the time and didn't let on.
She let on that she was leaving.
Don't let on about our arrangements.