Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary


verb \ˈbüst\

Simple Definition of boost

  • : to increase the force, power, or amount of (something)

  • : to push or shove (something or someone) up from below

Full Definition of boost

  1. transitive verb
  2. 1 :  to push or shove up from below

  3. 2 :  increase, raise <plans to boost production> <an extra holiday to boost morale>

  4. 3 :  to promote the cause or interests of :  plug <a campaign to boost the new fashions>

  5. 4 :  to raise the voltage of or across (an electric circuit)

  6. 5 slang :  steal, shoplift

  7. intransitive verb
  8. slang :  shoplift

Examples of boost

  1. She boosted the boy onto his father's shoulders.

  2. <boosted the child into her car seat>

Origin of boost

origin unknown

First Known Use: 1801

Synonym Discussion of boost

lift, raise, rear, elevate, hoist, heave, boost mean to move from a lower to a higher place or position. lift usually implies exerting effort to overcome resistance of weight <lift the chair while I vacuum>. raise carries a stronger implication of bringing up to the vertical or to a high position <scouts raising a flagpole>. rear may add an element of suddenness to raise <suddenly reared itself up on its hind legs>. elevate may replace lift or raise especially when exalting or enhancing is implied <elevated the taste of the public>. hoist implies lifting something heavy especially by mechanical means <hoisted the cargo on board>. heave implies lifting and throwing with great effort or strain <heaved the heavy crate inside>. boost suggests assisting to climb or advance by a push <boosted his brother over the fence>.

Rhymes with boost




Simple Definition of boost

  • : an increase in amount

  • : help or encouragement

  • : a push upward

Full Definition of boost

  1. 1 :  a push upward

  2. 2 :  an act that brings help or encouragement :  assist

  3. 3 :  an increase in amount

Examples of boost

  1. a boost in wheat production

  2. Exercise can sometimes provide a boost of energy.

  3. After layoffs at the company, employees needed a boost in morale.

  4. One company's innovation has proven to be a boost to the entire industry.

  5. Give the boy a boost onto the stage, will you?


First Known Use of boost


Seen and Heard

What made you want to look up boost? Please tell us where you read or heard it (including the quote, if possible).


February 11, 2016

the holder of an office

Get Word of the Day daily email!


Take a 3-minute break and test your skills!


How much does a batman (the Turkish unit of measurement) weigh?

196.5 pounds 16.96 pounds 100 pounds 2.2 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.


Test Your Knowledge - and learn some interesting things along the way.