boosternoun [ C ]
uk/ˈbuː.stər/us/ˈbuː.stɚ/booster noun [ C ] (IMPROVEMENT)
something that improves or increases something:
a confidence/morale booster
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Making things better
- a shot in the arm idiom
- add salt to sth idiom
- allay
- alleviate
- ameliorate
- make sb/sth over
- mitigate
- mollify
- more
- palliate
- redeem
- relieve
- salve
- spice
- spice sth up
- sting
- straighten
- straighten sb out
- streamline
- tonic
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booster noun [ C ] (ENGINE)
an engine on a spacecraft that gives extra power for the first part of a flight:
a rocket booster
Thesaurus: synonyms and related words
Space travel
- astronaut
- astronautics
- autopilot
- blast
- command module
- cosmonaut
- earthbound
- flyby
- heat shield
- launch pad
- moon buggy
- NASA
- retrorocket
- rocket
- rocket ship
- spacecraft
- spaceman
- touchdown
- tracking station
- UFO
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booster noun [ C ] (DRUG)
a small amount of a substance that is given to increase the effect of the same substance given some time before, to continue to protect a person from illness:
a polio booster
Thesaurus: synonyms and related words
Medicine in different forms
- anesthetic
- bolus
- counter
- dose
- drug
- hormone replacement therapy
- medicate
- medicinal
- meds
- ointment
- pharma
- placebo
- preparation
- radiotherapy
- restorative
- Rx
- tablet
- tonic
- topical
- vial
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