English Reference

Word

imperative

Phoneticsim·per·a·tive, stress on the second syllable

US/ˌɪmˈpɛɹətɪv/

UK/ɪmpˈɛɹətˌɪv/

Definitions

01essential or urgent

B2 · Upper Intermediate Formal

adj. extremely important or urgent; something that must be done immediately.

adj. of vital importance; crucial or essential. Often used in formal contexts to describe an unavoidable requirement.

“It is imperative that you finish the report before the meeting starts.”

“In the face of rising sea levels, it is imperative that coastal cities invest in robust flood defences immediately.”

02giving a command

C1 · Advanced Formal

adj. speaking in a way that sounds like you are giving a firm order.

adj. expressing a command or order; authoritative or peremptory in tone.

“The teacher used an imperative tone to stop the students from talking.”

“The captain issued his instructions in an imperative voice that left no room for hesitation or debate among the crew.”

03an essential duty

C1 · Advanced Countable noun Academic · Formal

n. something that is very important and must be done for moral or practical reasons.

n. an essential or urgent thing; a duty or obligation that cannot be ignored.

“Improving the school system is a social imperative for the new government.”

“The company viewed environmental sustainability not just as a marketing tool, but as a strategic and moral imperative.”

Real-World Examples

“Therefore, it's imperative that we understand how lenses and other materials required for surgery behave when exposed to environments beyond the Earth's atmosphere.”
Phys.org 13 Sept 2026
“To improve their accuracy, it is imperative to take historical floods into account or estimate the worst-case flood scenario and display it on the maps.”
Phys.org 4 Sept 2026

Etymology

Borrowed from Latin imperātīvus.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Grammar

Domain

Grammar

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944EikenEikenTest in Practical English ProficiencyThe English proficiency test from the Eiken Foundation of Japan, widely taken by Japanese students. Grades run from 5 to 1, with Pre-1 and Pre-2 between them.Pre-1
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

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English Reference