obligatory

that you must do or have because of a rule, law, etc.

obligatorio, necesario por ley/reglamento

• an obligatory course

Collocations obligatory military service · obligatory safety measures

• The course is obligatory for all new students.

  El curso es obligatorio para todos los estudiantes nuevos.

that you feel you should do because of your moral principles or sense of duty

moralmente necesario, deber ético

• an obligatory visit

Collocations obligatory social visits · obligatory family gatherings

• It's obligatory to help those in need.

  Es moralmente necesario ayudar a quienes lo necesitan.