› 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 production/performance/productivityboost sth (by) 20%/50%/100%, etc. The company boosted its dividend nearly 50%.