It is not known what the cause of failure was.

Some causes of failure may be expected in any computer built the same way.

Whatever the cause of failure, help to families has to operate on a wide front.

Find the cause of a child's failure to gain weight, especially when the child seems to be eating enough food.

Can multiple causes of death or failure be taken into account?

"This management was not the cause of the bank's failure, in our opinion," he said.

No precise cause of her respiratory failure has been given.

The causes of his failure have not yet been researched.

The cause of the plane's failure to lift into the air is unknown.

It wouldn't occur to them that the money was the cause of the engines' failure.