A delay of over 40 days in bringing an urgent application, which remains unexplained or inadequately explained, constitutes an inordinate delay that renders the matter not urgent, justifying striking it off the urgent roll. For purposes of Rule 58(4)(a), a deponent to an opposing affidavit on behalf of a corporate body need not always attach written proof of authority to represent the corporation; it is sufficient if the deponent sets out facts showing they occupy a relevant position, have personal knowledge of the facts, and would be a competent viva voce witness, with each case to be considered on its own merits.