presidential

presidentin

presidentillinen Pertaining to a president or presidency. (defdate)
puhekieltä presiding Presiding or watching over. (defdate)
With the bearing or composure that befits a president; stately, dignified. (defdate)
*2016, (w), The Guardian, 20 November:

I feel my age and supposed status mean I am permanently required to be in presidential mode. And I mean this in the old sense of “presidential”, meaning magnanimous, patient and generous, rather than in the modern sense of presidential, meaning being a corrupt, pussy-grabbing racist.