Definition of obligatory adjective from the Oxford Advanced Learner's Dictionary



    BrE BrE//əˈblɪɡətri//
    ; NAmE NAmE//əˈblɪɡətɔːri//
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  1. 1obligatory (for somebody) (to do something) (formal) that you must do because of the law, rules, etc. synonym compulsory It is obligatory for all employees to wear protective clothing. opposite optional
  2. 2(often humorous) that you do because you always do it, or other people in the same situation always do it In the mid 60s he took the almost obligatory trip to India.
  3. Word Originlate Middle English: from late Latin obligatorius, from Latin obligat- ‘obliged’, from the verb obligare, from ob- ‘towards’ + ligare ‘to bind’.Extra examples It’s almost obligatory to have a blog nowadays. The college authorities have now made these classes obligatory. Recently safety regulations have made it obligatory for all competitors to wear fist protectors. The hotel has a terrace with comfy chairs for that obligatory cocktail.
See the Oxford Advanced American Dictionary entry: obligatory