incumbent
in|cum|bent /ɪnk'ʌmbənt/ (incumbents)
1 [N-COUNT]
An incumbent is someone who holds an official post at a particular time. (FORMAL)
In general, incumbents have a 94 per cent chance of being re-elected.
[ADJ] ADJ n
Incumbent is also an adjective.
...the only candidate who defeated an incumbent senator.
2 [ADJ] it v-link ADJ upon/on n to-inf
If it is incumbent upon you to do something, it is your duty or responsibility to do it. (FORMAL)
It is incumbent upon all of us to make an extra effort.
1 [N-COUNT]
An incumbent is someone who holds an official post at a particular time. (FORMAL)
In general, incumbents have a 94 per cent chance of being re-elected.
[ADJ] ADJ n
Incumbent is also an adjective.
...the only candidate who defeated an incumbent senator.
2 [ADJ] it v-link ADJ upon/on n to-inf
If it is incumbent upon you to do something, it is your duty or responsibility to do it. (FORMAL)
It is incumbent upon all of us to make an extra effort.