Well have you concealed your thoughts from me, but not quite well enough.

They watched her come in, trying each to conceal his thoughts.

Yet all the while, she had concealed her dark thoughts.

"Then he had better be dead," said the princess, with a melancholy air, under which she concealed her thoughts.

I've never before encountered anyone who could conceal their thoughts from me.

They could not conceal their thoughts, made no attempt to.

You, of all of us, are best able to conceal your thoughts.

Then his face became very still, as faces become when the owners want to conceal their thoughts or intentions.

The sons were less skilled than he at concealing their thoughts.

He lived in a country and worked at an office where everyone concealed their inner thoughts.