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.
Incumbent. The incumbent, in politics, is the existing holder of a political office. This term is usually used in reference to elections, in which races can often be defined as being between an incumbent and non-incumbent.iktionary (0.00 / 0 votes) Rate this definition: incumbent (Noun). The current holder of an office, such as ecclesiastical benefice or a an elected office. incumbent (Noun). A holder of a position as supplier to a market or market segment that allows the holder to earn above-normal profits. incumbent (Adjective).