Cool MateCompulsory vs Mandatory
When to use each in English, with meaning, register, and examples.
Compulsory
Mandatory
| Compulsory | Mandatory | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/kəmˈpʌlsəri/"]/🇺🇸 /["/kəmˈpʌlsəri/"]/ | 🇬🇧 /["/ˈmændətəri//mænˈdeɪtəri/"]/🇺🇸 /["/ˈmændətɔːri/"]/ |
| Meaning | Something that must be done or followed. | Required by law or rules; something you must do. |
| Example | English is a **compulsory subject** at this level. | The offence carries a mandatory life sentence. |
| Register | Formal | Formal |
| How common | Top 5,000 (fairly common) | Top 2,000 (common) |
| CEFR level | B2 | C1 |
| Part of speech | adjective | adjective |
| Collocations | compulsory education, compulsory attendance, compulsory courses, compulsory insurance | mandatory requirements, mandatory attendance, mandatory training, mandatory reporting, mandatory guidelines |
| Antonyms | optional, voluntary, discretionary | optional, voluntary, discretionary |
| Common mistakes | Confused with 'optional'; it means the opposite., Often misspelled as 'compolsory'., Used incorrectly as an adverb; it is an adjective. | Confused with 'voluntary' which means optional., Omitting 'is' or 'are' in sentences, e.g. saying 'This training is mandatory' as 'This training mandatory'., Using 'mandatory' in informal contexts where simpler words like 'needed' would fit better. |
| Usage notes | Used in formal contexts, often in legal or academic settings. Avoid using in casual conversation; instead, use 'required' or 'mandatory' in those contexts. | Use 'mandatory' in formal contexts, such as laws or regulations. It's appropriate when something is not optional. However, avoid it in casual conversations. |
Frequently asked questions: Compulsory vs Mandatory
What's the difference between Compulsory and Mandatory?
Compulsory: Something that must be done or followed. Mandatory: Required by law or rules; something you must do.
Which is more common: Compulsory and Mandatory?
Mandatory is the most common in everyday English.
Which is more advanced: Compulsory and Mandatory?
Mandatory is the highest level, at C1, on the CEFR scale.
Are Compulsory and Mandatory the same CEFR level?
Compulsory: B2, Mandatory: C1 on the CEFR scale.
What part of speech are Compulsory and Mandatory?
Compulsory: adjective, Mandatory: adjective.
Can you show an example of each?
Compulsory: English is a **compulsory subject** at this level. Mandatory: The offence carries a mandatory life sentence.
Can I use Compulsory and Mandatory interchangeably?
Not always. Compulsory and Mandatory are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.