Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “powerful”

See all translations

powerful

adjective uk   /ˈpaʊə.fəl/ us    /ˈpaʊ.ɚ-/

powerful adjective (CONTROL)

B1 having a lot of power to control people and events: The president is more powerful than the prime minister. She's the most powerful person in the organization.
More examples

powerful adjective (STRENGTH)

B1 having a lot of strength or force: She's an extremely powerful runner. The picture quality is bad because the TV signal isn't powerful enough.B2 having a very great effect: a powerful drug Her speech about cruelty to children was very powerful.

powerful adjective (IMAGE SIZE)

having the power to increase the size of an image of something that is very small or far away many times: You'd need an extremely powerful microscope to see something so small.
powerfully
adverb uk   /-i/ us  
B2 He argued powerfully and persuasively against capital punishment. She kicked the ball so powerfully that it flew over the hedge. Klaus is a very powerfully built man (= has a body with large strong muscles).
(Definition of powerful from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of powerful?
Add Cambridge dictionaries to your browser to your website

Definitions of “powerful” in other dictionaries

Word of the Day

tinsel

long pieces of thin, shiny material used as decoration, especially at Christmas

Word of the Day

Party Talk (The language of party chat)

by Kate Woodford,
December 23, 2014
​​​ With the party season in full swing (= at its busiest now), we consider the language of socializing (= enjoying yourself with other people). We’re looking especially at words and phrases which are used to describe the different ways that people behave at a party and the sort of conversations that party

Read More 

tweleb noun

December 22, 2014
informal a Twitter celebrity; (more specifically, someone who has more than 1,000 followers on Twitter) There were a few old and a few new faces, including a tweleb or two. Expect to see and hear more from these cool kids.

Read More