Compulsory
adjAntonymSSC PYQ × 8/kəmpˈəlsəriː/ · कम्पल्सरी
That must be done; necessary by law or a rule
अनिवार्य
Attendance is compulsory for the practical only.
Wearing a helmet is compulsory for riders.
Daily use: Practical mein attendance compulsory hai.
Compulsory में compel है — मजबूर करना। जो काम आपको कानून या तय व्यवस्था से करना ही पड़े, वो compulsory है। Optional और voluntary इसका उल्टा।
Compulsory carries compel, to force. Whatever you are forced to do by law or by a fixed requirement is compulsory. Optional and voluntary are the opposite.
Antonym में voluntary, optional, elective आते हैं (book में volunteer भी है); mandatory, obligatory synonym हैं।
Antonyms offered are voluntary, optional and elective (the book also lists volunteer); mandatory and obligatory are synonyms.