For one thing, âTrumpâ is not his real name. The Donaldâs grandfather was a German immigrant named Frederick Drumpf who emigrated to the U.S. in 1885 and became a naturalized citizen in 1892. At some point, he started calling himself âFrederick Trump,â but it is unclear if he ever changed his name officially.
incumbent. adj. 1. (often: postpositive and foll by on or upon and an infinitive) morally binding or necessary; obligatory: it is incumbent on me to attend.
Wiktionary(1.00 / 1 vote)Rate this definition: 1  incumbent(Noun) The current holder of an office, such as ecclesiastical benefice or a an elected office. 2  incumbent(Noun) A holder of a position as supplier to a market or market segment that allows the holder to earn above-normal profits.