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obligatory

/əˈblɪɡ.ə.tɔ.ɹi/adjective5 syllables

Obligatory means: morally or legally constraining or binding.

Synonyms for obligatory11

adjective, as in morally or legally constraining or binding

bounden, compulsory, mandatory, required, de rigueur, imposed, incumbent on, indispensable, prerequisite, necessary

adjective, as in required by obligation or compulsion or convention

necessary

also used for obligatory

incumbent

Includes material from Wiktionary, CC BY-SA 4.0.

Opposites of obligatory

optional

What does obligatory mean?2

adjective

1

morally or legally constraining or binding“attendance is obligatory”

2

required by obligation or compulsion or convention“he made all the obligatory apologies”

Definitions from the Open English WordNet, CC BY 4.0.

Obligatory in a sentence

  • If school wasn't obligatory, I would stop going there.Zifre
  • School is obligatory for all children in Germany, starting at age six.frpzzd
  • One may add matres lectionis when the word could be ambiguous, but surely it is not obligatory.Eldad
  • Presence of all members is obligatory.FeuDRenais2
  • Is it obligatory to rent a car?speedwell
  • They are not obligatory to use.CM
  • Fasting in Ramadan is obligatory for every Muslim.robingaspi
  • English instruction is obligatory in most countries.rul

Sentences from Tatoeba, CC BY 2.0 FR, credited to their authors.