• synonyms


See more synonyms for boost on Thesaurus.com
verb (used with object)
  1. to lift or raise by pushing from behind or below.
  2. to advance or aid by speaking well of; promote: She always boosts her hometown.
  3. to increase; raise: to boost prices; to boost the horsepower of the car by 20 percent.
  4. Slang. to steal, especially to shoplift: Two typewriters were boosted from the office last night.
Show More
verb (used without object)
  1. Slang. to engage in stealing, especially shoplifting.
Show More
  1. an upward shove or raise; lift.
  2. an increase; rise: There's been a tremendous boost in food prices.
  3. an act, remark, or the like, that helps one's progress, morale, efforts, etc.: His pep talk was the boost our team needed.
Show More

Origin of boost

1805–15, Americanism; perhaps Scots dialect boose (variant of pouss push) + (hoi)st

Synonyms for boost

See more synonyms for on Thesaurus.com
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for boost

breakthrough, upgrade, advance, addition, hike, rise, expansion, improvement, jump, lift, increment, aid, support, assistance, encourage, sustain, push, promote, heighten, raise

Examples from the Web for boost

Contemporary Examples of boost

Historical Examples of boost

  • Of course, I was expecting something—a boost in salary, or something like that.

    The Fortune Hunter

    Louis Joseph Vance

  • Go easy on stakes because unless careful will boost the comein.

    Mixed Faces

    Roy Norton

  • And since I've left the San, I've looked forward to your letters to boost up my spirits.

    The Straw

    Eugene O'Neill

  • In that case, we will have to turn in and88 give the fellow what you Americans call a boost.

    Wayside Courtships

    Hamlin Garland

  • "Then you'll have to boost the buggy-wheels, that's all," answered Jim.

British Dictionary definitions for boost


  1. encouragement, improvement, or helpa boost to morale
  2. an upward thrust or pushhe gave him a boost over the wall
  3. an increase or risea boost in salary
  4. a publicity campaign; promotion
  5. the amount by which the induction pressure of a supercharged internal-combustion engine exceeds that of the ambient pressure
Show More
verb (tr)
  1. to encourage, assist, or improveto boost morale
  2. to lift by giving a push from below or behind
  3. to increase or raiseto boost the voltage in an electrical circuit
  4. to cause to rise; increaseto boost sales
  5. to advertise on a big scale
  6. to increase the induction pressure of (an internal-combustion engine) above that of the ambient pressure; supercharge
Show More

Word Origin for boost

C19: of unknown origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for boost


1815, literal and figurative, American English, of unknown origin. Related: Boosted; boosting. As a noun by 1825.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

boost in Science


  1. A linear map from one reference frame to another in which each coordinate is increased or decreased by an independent constant or linear function. A boost corresponds to a shift of the entire coordinate system without any rotation of its axes.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.