obligatory

adjective
/əˈblɪɡ.ə.tɔː.ri/

Meaning

Required by a legal, moral, or other rule; compulsory.
required by law or rules; compulsory; mandatory
Required by law, rule, or custom; mandatory.

Example Sentences

Wearing a seatbelt is obligatory in most countries.

Attendance at the meeting is obligatory for all employees.

Wearing a helmet is obligatory when riding a motorcycle.

Synonyms

mandatory, required, compulsory, necessary, binding, enforced
Entry 1
mandatory, required, compulsory
Entry 2
mandatory, compulsory, required, necessary
Entry 3
mandatory, compulsory, required, binding, enforced

Antonyms

optional, voluntary, unnecessary, discretionary, elective
Entry 1
optional, voluntary, unnecessary
Entry 2
optional, voluntary, discretionary, elective
Entry 3
optional, voluntary, elective

Collocations

obligatory service, obligatory attendance, obligatory requirement, obligatory rule, obligatory duty, obligatory course
Entry 2
obligatory service, obligatory attendance, obligatory requirement
Entry 3
obligatory rule, obligatory duty, obligatory course, obligatory requirement

Related Vocabularies

having won a battle or contest; rejoicing as a result of success
Involving a lot of effort, energy, or concentration in a short period of time.
belonging to a period other than that being portrayed; old-fashioned or outdated
relating to or consisting of runes; mysterious or magical
Just coming into existence and beginning to develop.
unwilling or hesitant to do something

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