I realize how busy you are, but this is a matter of the most extreme urgency.

She was looking back at him with an expression of extreme urgency.

And it more accurately reflects the extreme urgency of the situation we now face.

Cranberry juice, for example, often causes extreme urgency in patients.

Katy indicated that the matter is one of extreme urgency.

But never did we demand your services except in cases of extreme urgency.

He says it is a matter of the most extreme urgency.

She needed to visit the ladies room as a matter of extreme urgency.

It may be that we can improve matters in the meantime, for this is a matter of extreme urgency.

I would be very interested to learn that as a matter of extreme urgency.