Suitably dressed, he seemed timid and awkward, reserved, quite diffident, and of mediocre intelligence.

The CIA would then become "a poor to mediocre intelligence operation virtually in perpetuity."

A fanatic and a man of mediocre intelligence, that monk might perhaps be a considerable force in the hands of the Society.

It may fairly be called professional slang, and can quickly be acquired, even by men of mediocre intelligence, in any diplomatic circle.

Publicly it was said that he was a great theologian, but privately he was considered a strong man, although of mediocre intelligence.

"A mediocre intelligence and a detestable friend" is the way the prototype of Claude Lantier puts the case.