Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “boost”


verb [T]     /buːst/
B2 to improve or increase something: The theatre managed to boost its audiences by cutting ticket prices. 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.Increasing and intensifyingMaking things betterBecoming better
(Definition of boost verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of boost

More definitions for “boost”

Definitions of “boost” in other dictionaries

Word of the Day

limber up

to do gentle exercises to stretch the muscles in order to prepare the body for more active physical exercise

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More