Meaning of “boost” in the English Dictionary

"boost" in British English

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boostverb [ T ]

uk /buːst/ us /buːst/

B2 to improve or increase something:

Share prices were boosted by reports of the president's recovery.
I tried to boost his ego (= make him feel more confident) by praising his cooking.

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boostnoun [ C usually singular ]

uk /buːst/ us /buːst/

B2 the act of boosting something:

The lowering of interest rates will give a much-needed boost to the economy.
Passing my driving test was such a boost to my confidence.

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(Definition of “boost” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"boost" in American English

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boostverb

us /bust/

boost verb (MAKE BETTER)

[ T ] to improve or increase something:

We took various steps to try to boost sales.

boost verb (LIFT)

[ T always + adv/prep ] to lift someone or something by pushing from below:

She boosted the little boy up to see over the fence.

boostnoun

/bust/

boost noun (IMPROVEMENT)

[ C usually sing ] an improvement or increase, or an action that causes this:

The president’s approval rating got a boost following his speech.

boost noun (LIFT)

[ C ] a push from below that lifts a person or thing:

I need a boost to get over the wall.

(Definition of “boost” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"boost" in Business English

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boostverb [ T ]

uk /buːst/ us

to increase or improve something:

boost profits/prices/rates The industry has exceeded all expectations for boosting profits and dividends.
boost exports/sales/trade The lower exchange rate is already boosting exports.
boost confidence/morale He was elected on a platform to create jobs and boost investor confidence.
The effect of these policies would be to encourage spending and boost the economy.
boost sth (by) 20%/50%/100%, etc. The company boosted its dividend nearly 50%.

boostnoun [ C, usually singular ]

uk /buːst/ us

an act or event that increases or improves something:

Typically sales jump in the autumn, when they get a boost from the back-to-school and holiday shopping seasons.
The campaign for pension reform received a boost on Friday.
Shares on Wall Street were given a boost by a rally in the US Treasury bond market.
a big/major/huge/significant boost

an increase:

a boost in sth Motorists who operate diesel-powered vehicles would face a 1.5-cent-a-gallon boost in fuel taxes.
The income boost for the two million lowest paid will not take effect until October.

(Definition of “boost” from the Cambridge Business English Dictionary © Cambridge University Press)