English Reference

Word

expeditionary

Phoneticsex·pe·di·tionary

US/ˌɛkspəˈdɪʃəˌnɛɹi/

UK/ˌɛkspədˈɪʃənəɹi/

Definition

adj. describing a group of people who travel to a faraway place to do a specific job, like a military mission or a scientific study.

adj. relating to or intended for an expedition, especially one involving military forces or scientific research. Often describes equipment, personnel, or operations designed for temporary deployment in a foreign or remote location.

Examples

“The soldiers packed their expeditionary gear for the long journey.”

“The government approved the deployment of an expeditionary force to provide humanitarian aid in the disaster zone.”

“Modern expeditionary units are designed to be self-sufficient, carrying all necessary logistical support to operate effectively in hostile environments without immediate access to local infrastructure.”

Examples

simple

“The soldiers packed their expeditionary gear for the long journey.”

contextual

“The government approved the deployment of an expeditionary force to provide humanitarian aid in the disaster zone.”

complex

“Modern expeditionary units are designed to be self-sufficient, carrying all necessary logistical support to operate effectively in hostile environments without immediate access to local infrastructure.”

Real-World Examples

“Meanwhile, Canada, seeking to diversify its defence ties ⁠away from ⁠the ​US, has formally applied to join the British-led Joint Expeditionary Force military ⁠coalition, prime minister Mark Carney’s office said on Wednesday.”
The Guardian 16 Sept 2026
“A volunteer driver and scout attached to the British Expeditionary Force, Rawlinson, dressed in civilian clothes, drove down a cobblestone street, watching for enemy patrols.”
Smithsonian Magazine 1 Sept 2026

Word family

ADJECTIVE

expeditionary(C1)

Domain

Military

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.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL 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: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Occasional
Level
C1 · Advanced
Updated

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English Reference