But the underlying reason was fear of what people would say.

At least if it happens again, we'll know there's an underlying reason.

When persistent problems do occur there may be an underlying medical reason.

An underlying reason is the nature of the material.

But free agency didn't change the underlying reason for salary arbitration.

Maybe the underlying reason he bought the team was to win.

But the underlying reason why nothing is done is simple.

He did not, however, back away from the underlying reason for the meeting.

But the underlying reason was to demonstrate his military prowess.

To do so, however, may cause us to miss the basic underlying reason for the patient's problem.