a. imposed as an obligation or duty; currently holding an office
Voters see the same old candidates year after year and figure that the incumbent is usually a lock in a vast number of congressional districts.
Sentence in Classic:
Balashev, feeling it incumbent on him to reply, said that from the Russian side things did not appear in so gloomy a light.
War and Peace(V3) By Leo Tolstoy Context
With the prospect of spending at least two months at Uppercross, it was highly incumbent on her to clothe her imagination, her memory, and all her ideas in as much of Uppercross as possible.
For about three years I heard little of him; but on the decease of the incumbent of the living which had been designed for him, he applied to me again by letter for the presentation.
Pride and Prejudice By Jane Austen Context
I rarely passed more unpleasant moments, so much so that when they did arrive all together punctually at six I was overjoyed to see them, as though they were my deliverers, and even forgot that it was incumbent upon me to show resentment.
Notes from the Underground By Feodor Dostoevsky Context