The need to conceal information seemed to be an ingrained part of human nature.

I wondered whether they thought that it was fair to investors to conceal such information.

I don't approve of the government concealing possibly critical information either.

There are limits to the government's attempts to conceal classified information at trial.

It began to be used not only for commercial reasons to conceal information but also in daily social contexts.

You're even concealing information about a murder, from a fellow officer.

Whatever it was, why did she feel she needed to conceal information?

Administration officials said they had not concealed information about the cost of the new drug benefit.

That could conceal information about a person on any number of subjects, ranging from credit standing to political affiliation.

But the person said there was no evidence that Tyco had concealed information.