incumbent

Meaning

necessary for (someone) as a duty or responsibility.

Necessary as a duty or responsibility; currently holding office.

Example Sentences

It is incumbent upon all citizens to obey the law.

It is incumbent upon all citizens to vote in elections.

Synonyms

obligatory, essential, mandatory, compulsory

Entry 1

obligatory, essential

Entry 2

obligatory, mandatory, compulsory, essential

Antonyms

optional, unnecessary, voluntary

Entry 1

optional, unnecessary

Entry 2

optional, voluntary, unnecessary

Collocations

incumbent upon, incumbent president, incumbent duty, incumbent responsibility