"Nothing to be done there," said Fix to himself, concealing his disappointment.
I could scarcely conceal my disappointment at the good time we were having.
He had hoped for something more, and was trying to conceal his disappointment.
So he sat back, making no effort to conceal his disappointment, and began to teach.
Even so, a moment later I was trying to conceal my disappointment.
I tried to conceal my disappointment over the appearance of the finished product.
It was hard for her to conceal her disappointment when she won nothing.
Administration officials did not conceal their disappointment, or fear about what Israel's decision may mean for the peace process.
"Then," said I, unable to conceal my disappointment, "the life he talks about so often will never be written?"
I collect you are on your way out," he said, trying to conceal his acute disappointment.