life jacket
B1Neutral to Informal (in literal sense); Metaphorical use can be formal.
Definition
Meaning
A sleeveless jacket or vest designed to keep a person afloat in water, typically made of buoyant or inflatable material, used as a safety device to prevent drowning.
Any device, system, or measure that provides crucial safety or support in a dangerous or unstable situation, often used metaphorically.
Linguistics
Semantic Notes
Primarily a countable noun (a life jacket, life jackets). It denotes a specific, physical object but can be used abstractly. The compound is usually written as two words, though 'lifejacket' is an accepted variant.
Dialectal Variation
British vs American Usage
Differences
In US English, 'life vest' or 'personal flotation device (PFD)' are very common, equally formal alternatives. In UK English, 'life jacket' is predominant; 'life vest' is understood but less common.
Connotations
In US contexts, 'life vest' may sound slightly more technical or modern. 'Life jacket' has a traditional, practical connotation in both varieties.
Frequency
‘Life jacket’ is high frequency in UK English. In US English, ‘life vest’ and ‘PFD’ are equally or more frequent in official/safety contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
VERB + life jacket (put on, wear, fasten)ADJ + life jacket (inflatable, foam, approved)life jacket + VERB (inflates, saves, supports)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “A financial life jacket (metaphorical)”
- “Throw someone a life jacket (offer crucial help)”
- “Without a life jacket (unprepared for danger)”
Usage
Context Usage
Business
Metaphorically used for emergency financial aid or a crucial safety measure for a failing project. (e.g., 'The loan acted as a life jacket for the company.')
Academic
Used in maritime studies, safety engineering, and disaster management literature to discuss personal protective equipment.
Everyday
Common in travel, boating, swimming, and safety instructions. (e.g., 'Don't forget your life jacket!')
Technical
Specific categories in regulations: Type I, II, III PFDs (US); 150N, 275N lifejackets (UK/EU). Materials and inflation mechanisms are specified.
Examples
By Part of Speech
verb
British English
- The crew will life-jacket all passengers before departure. (rare, informal)
American English
- They life-jacketed the kids for the boat trip. (rare, informal)
adjective
British English
- The life-jacket policy is strictly enforced. (attributive use)
- We attended a life-jacket safety drill. (attributive use)
American English
- She reviewed the life-vest regulations. (Note US preference for 'vest' in attributive use too)
Examples
By CEFR Level
- Always wear a life jacket on the boat.
- The life jacket is orange.
- Here is your life jacket.
- Passengers must put on their life jackets before the ferry departs.
- The airline demo showed how to use the life jacket under your seat.
- This inflatable life jacket is very compact.
- Regulations stipulate that a certified life jacket must be provided for every person on board.
- The metaphorical life jacket of government subsidies kept the struggling theatre afloat.
- He swiftly fastened the leg straps of his life jacket as the alarm sounded.
- The new maritime protocol mandates the inspection of life jacket canisters biannually.
- Critics argued the bailout was merely a temporary life jacket for an intrinsically unsustainable business model.
- Sophisticated life jackets now integrate GPS and personal locator beacons for offshore sailors.
Learning
Memory Aids
Mnemonic
Think of a 'jacket for your life' – it's a jacket you wear specifically to save your life in water.
Conceptual Metaphor
SAFETY IS A FLOTATION DEVICE / CRISIS IS DROWNING. Abstract support in difficult times is conceptualized as an object that keeps you from sinking.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calque 'жилет жизни'. The correct Russian equivalent is 'спасательный жилет'.
- Do not confuse with 'спасательный круг' (lifebuoy/life ring), which is a different object.
Common Mistakes
- Incorrect: 'lifejacket' (while accepted, the two-word form is more standard in edited writing).
- Incorrect: 'He put a life jacket.' (Missing preposition: 'put on a life jacket').
- Incorrect use of uncountable: 'We need more life jacket.' (Should be 'life jackets').
Practice
Quiz
In which context is 'life jacket' used metaphorically?
FAQ
Frequently Asked Questions
Both forms are accepted, but the two-word form 'life jacket' is more common in formal and edited writing. Dictionaries list it as an open compound.
Technically, a life jacket typically provides more buoyancy and is designed to turn an unconscious person face-up. A life vest (or buoyancy aid) is for conscious users in calm water and may not have this feature. In everyday US English, the terms are often used interchangeably.
Informally, yes (e.g., 'We need to life-jacket the children'), but it's non-standard. The standard phrasing is 'to provide with a life jacket' or 'to make someone wear a life jacket'.
No. A life jacket is worn on the body. A lifebuoy (or life ring) is a ring-shaped device that is thrown to a person in the water.
Explore