verb

help or encourage (something) to increase or improve.

a range of measures to boost tourism

improve,raise,uplift,increase,augment,magnify,swell,amplify,enhance,encourage,heighten,help,promote,foster,nurture,arouse,stimulate,invigorate,revitalize,inspire,perk up,support,bolster,buttress,shore up,buck up,jack up,give a shot in the arm to,expand,elevate,escalate,add to,strengthen,enlarge,inflate,push up,advance,develop,further,facilitate,assist,aid,back,hike,hike up,beef up,crank up,bump up,step up

noun

a source of help or encouragement leading to increase or improvement.

the cut in interest rates will give a further boost to the economy

uplift,lift,spur,encouragement,help,inspiration,stimulus,pick-me-up,fillip,support,bolster,shot in the arm