booster
B2Formal/Informal/Technical (context-dependent)
Definition
Meaning
A person or thing that improves, strengthens, or increases something.
A supplementary dose of a vaccine; an amplifier for electrical signals; a rocket engine providing additional thrust; a supporter or promoter.
Linguistics
Semantic Notes
The term refers to something that provides a secondary increase or enhancement, following an initial action or state.
Dialectal Variation
British vs American Usage
Differences
No major meaning differences, though frequency of use may vary by context. 'Booster seat' is equally common.
Connotations
Generally neutral, associated with health (vaccines), space (rockets), or support (enthusiast).
Frequency
Higher frequency in American media due to space program and public health discussions.
Vocabulary
Collocations
Grammar
Valency Patterns
[booster] + for/of + [noun] (a booster for morale)[adjective] + [booster] (a much-needed booster)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “A shot in the arm (informal synonym for a booster)”
Usage
Context Usage
Business
Refers to initiatives to boost sales or morale: 'The marketing campaign was a real booster for Q4 revenues.'
Academic
Used in public health or engineering contexts: 'The study examined antibody levels post-booster.'
Everyday
Most common in health (vaccine boosters) and parenting (car booster seats).
Technical
In rocketry: 'The solid rocket boosters separated successfully.' In electronics: 'A Wi-Fi signal booster.'
Examples
By Part of Speech
verb
British English
- Not applicable. The verb is 'boost'.
American English
- Not applicable. The verb is 'boost'.
adverb
British English
- Not applicable. No adverbial form.
American English
- Not applicable. No adverbial form.
adjective
British English
- The booster dose is recommended for the elderly.
- He attended a booster session for the training course.
American English
- The booster shot is available at pharmacies.
- The team held a booster meeting before the launch.
Examples
By CEFR Level
- The child needs a booster seat in the car.
- I got a booster for my vaccine.
- The charity event was a real booster for the community's spirit.
- My phone signal is weak; I might need a booster.
- Public health officials are recommending a seasonal flu booster for at-risk groups.
- The spacecraft's boosters fell away after launch.
- The new policy acted as an economic booster, stimulating growth in the sector.
- The amplifier includes a built-in bass booster for enhanced audio fidelity.
Learning
Memory Aids
Mnemonic
Think of a BOOT stepping on a STEReo to make the music louder – a BOOSTER makes things stronger or louder.
Conceptual Metaphor
ADDITION IS UP / SUPPORT IS A PROP (booster seat, booster club)
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct translation to 'бустер' in formal contexts; use 'дополнительная доза вакцины', 'усилитель'.
- In rocket context, 'ускоритель' or 'стартовый двигатель' is more precise than 'бустер'.
Common Mistakes
- Using 'booster' as a verb (the verb is 'to boost').
- Confusing 'booster shot' with the first dose of a vaccine.
Practice
Quiz
In which context is 'booster' LEAST likely to be used?
FAQ
Frequently Asked Questions
It is neutral; its formality depends on context. It's standard in technical (medical, engineering) and everyday language.
No. The related verb is 'to boost'. 'Booster' is only a noun or used attributively as an adjective (e.g., booster dose).
A 'booster' implies increasing something that already exists or has declined. A 'supplement' is something added to complete or enhance, not necessarily following a prior decline.
It's used in both varieties without difference in meaning.
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