The phrase "pressing reason" refers to a strong and urgent motive or justification for taking a particular action or decision. It implies that there is a compelling need or urgency to do something. Full definition
In addition to the speed limitations there is a very pressing reason for abandoning the oldest popular Wi - Fi protocol 802.11 b. (howtogeek.com)
The first and most pressing reason behind sleep problems during pregnancy might be the increasing size of the fetus, which could make it difficult for women to find a comfortable sleeping position. (vkool.com)
There are sellers who have pressing reasons why they must sell, such as a job transfer, divorce or foreclosure. (remonline.com)