compulsory

adjective

com·​pul·​so·​ry kəm-ˈpəl-sə-rē 

-ˈpəls-rē

1

: mandatory, enforced

compulsory retirement

2

: coercive, compelling

compulsory measures

compulsorily

kəm-ˈpəl-sə-rə-lē 

-ˈpəls-rə-

adverb

Synonyms of compulsory

• mandatory
• required
• incumbent
• necessary

Examples of compulsory in a Sentence

To free the mind and the heart from compulsory religious confession and observance was good for all three interested parties: the state, the church and the people. —Jon Meacham, Newsweek, 27 Jan. 2009

So he wants a private life and no photographs and nobody to know his home address. I can dig it, I can relate to that (but, like he should try it when it's compulsory instead of a free-choice option). —Salman Rushdie, New York Times Book Review, 14 Jan. 1990

He began to resent the compulsory attendance at the boring factory meetings. —James Reston, Jr., Time, 28 Nov. 1988

compulsory retirement at age 70

Recent Examples on the Web

French high school students' compulsory classroom hours are among the highest in Europe. — Nicolas Garriga, Arkansas Online, 7 Oct. 2026

French high school students’ compulsory classroom hours are among the highest in Europe. — ABC News, 6 Oct. 2026

Voting is compulsory for most adults in the world’s fifth largest country, and turnout is typically among the highest in the Americas. — Alessandra Freitas, CNN Money, 4 Oct. 2026

Voting in Brazil is compulsory for most citizens ages 18 to 70 and optional for 16- and 17-year-olds, people over age 70, and people who cannot read or write. — Katie Angell Britannica Editors Oct. 2, Encyclopedia Britannica, 1 Oct. 2026

Word History

Etymology

borrowed from Anglo-French & Medieval Latin; Anglo-French compulsorie "compelling, coercive," borrowed from Medieval Latin compulsōrius, derivative, with -tōrius, deverbal adjective suffix (originally forming derivatives from agent nouns ending in -tōr-, -tor) of Latin compellere "to drive together, force to go, force (to a view, course of action)" (with -s- from past participle compulsus) — more at compel

First Known Use

1581, in the meaning defined at sense 1

Kids Definition

compulsory

adjective

com·​pul·​so·​ry kəm-ˈpəls-(ə-)rē 

1

: required by or as if by law

compulsory education

2

: having the power of forcing someone to do something

a compulsory law

Legal Definition

compulsory

adjective

com·​pul·​so·​ry kəm-ˈpəl-sə-rē 

1

: required or compelled by law : mandatory, obligatory

compulsory arbitration

compulsory insurance

specifically : required to be brought or asserted in a pleading because of having arisen from the transaction or occurrence that is the subject of litigation

a compulsory counterclaim

compulsory reconvention

compare elective, permissive

2

: using compulsion : compelling

compulsory measures

compulsorily

-sə-rə-lē 

adverb