Meanings of as uncommunicative in English

Like most debriefers, they were as uncommunicative as brick walls.

But he had never met anyone as cold and as uncommunicative as these masked men.

His roommate, as uncommunicative as ever, had been awake for a short while, reading a Spanish-language magazine.

He became as uncommunicative as the Sphinx.

You're as uncommunicative as a newly-elected office-holder.

Senator Groodman, as uncommunicative as a statue, was already speeding back to the far West; and Senator August, equally silent, was on his way home.