Synonym: compelled, necessary, required. Antonym: convex, elective, optional, voluntary. Similar words: impulse, impulsive, pulse, all sorts of, expulsion, computer, sensory, compunction. Meaning: [-lsərɪ] 
adj. required by rule.
adj. required by rule. 
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1. Attendance at these lectures is not compulsory.
2. In East Germany learning Russian was compulsory.
3. Is military service compulsory in your country?
4. Attendance at evening prayers is not compulsory.
5. He has just finished a stint of compulsory military service.
6. It is absurd to be discussing compulsory redundancy policies for teachers.
7. The ministry has said it hopes to avoid compulsory redundancies.
8. Wearing seat belts in cars is compulsory by law.
8. Sentencedict.com is a sentence dictionary, on which you can find nice sentences for a large number of words.
9. Is English a compulsory subject?
10. Workers won their fight to stop compulsory redundancies.
11. These books are compulsory/required reading for students of architecture.
12. Compulsory schooling ends at sixteen.
13. Britain did not introduce compulsory primary education until 1880.
14. There is a compulsory course in statistics.
15. Education is compulsory in Britain.
16. English is a compulsory subject at this level.
17. Registration of births and deaths became compulsory in 1871.
18. They have campaigned strongly for compulsory registration of dogs.
19. Swimming was compulsory at my school.
20. Attendance at the meeting is compulsory.
21. Registration with the council is compulsory.
22. Certain courses are compulsory, others are optional.
23. It is compulsory for all motorcyclists to wear helmets.
24. They said that compulsory identity cards would infringe civil liberties.
25. Military service is compulsory for every able-bodied male between 18 and 27.
26. Russian is the one compulsory foreign language on the school curriculum.
27. English is compulsory for all students, but art and music are optional.
28. If I were the president of a university I should establish a compulsory course in "How to Use Your Eyes". The professor would try to show his pupils how they could add joy to their lives by really seeing what passes unnoticed before them. He would try to awake their dormant and sluggish faculties.
29. Many young men are trying to get away from compulsory military conscription.
30. In June last year, 26 people came out on strike protesting against a compulsory 65-hour week.
More similar words: impulse, impulsive, pulse, all sorts of, expulsion, computer, sensory, compunction, microcomputer, also, convulsions, campus, tempura, impunity, impudent, impudence, impudently, pull, sore, pull in, pull off, pull out, pull up, pull on, sorry, sordid, opulent, popular, pull down, sort out.