compulsory
Americanadjective
-
required; mandatory; obligatory.
compulsory education.
- Antonyms:
- voluntary
-
using compulsion; compelling; constraining.
compulsory measures to control rioting.
- Antonyms:
- voluntary
noun
adjective
-
required by regulations or laws; obligatory
compulsory education
-
involving or employing compulsion; compelling; necessary; essential
Other Word Forms
Etymology
Origin of compulsory
1510–20; < Medieval Latin compulsōrius, equivalent to Latin compul-, variant stem of compellere ( see compel) + -sōrius, for -tōrius -tory 1; cf. compulsive
Explanation
When something is compulsory, it is required or must be done. In most states, it's compulsory for kids to attend school (or an equivalent homeschool) from age six to seventeen. This adjective is from Medieval Latin compulsorius, "using force," from Classical Latin compellere, "to force." The Latin suffix –orius corresponds to English -ory, "containing or involving." Other English words descended from the same Latin verb are compel and compulsive.
Vocabulary lists containing compulsory
Night
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The Bill of Rights
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Grade 11, List 1
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It is not compulsory, and could help people who have no other official form of identification like a passport or driving licence, the King said in his speech.
From BBC • May 13, 2026
If they refused, they faced a compulsory levy that amounted to 2.25 percent of their Australian revenue, he said.
From Barron's • Apr. 28, 2026
The generation that wrote and ratified the Constitution had direct experience with compulsory service, but it looked nothing like modern conscription.
From Slate • Apr. 15, 2026
There are annual and compulsory refresher courses, they said.
From The Wall Street Journal • Apr. 15, 2026
He didn't say anything then, but the next night he made us have compulsory study hall in the academic building and he came up and made a speech.
From "The Catcher in the Rye" by J. D. Salinger
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
