Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “energy”

energy

noun uk   /ˈen.ə.dʒi/ us    /-ɚ-/

energy noun (STRENGTH)

B1 [U] the power and ability to be physically and mentally active: Since I started eating more healthily I've got so much more energy. I was going to go out this evening, but I just haven't got the energy. [+ to infinitive] I didn't even have the energy to get out of bed.approving Her writing is full of passion and energy (= enthusiasm). energies [plural] the total of all your power and ability to be mentally and physically active: I'm going to channel all my energies into getting a better job.

energy noun (POWER)

B1 the power from something such as electricity or oil, which can do work, such as providing light and heat: The energy generated by the windmill drives all the drainage pumps. energy conservation/efficiency. nuclear energy
(Definition of energy from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of energy?
Add Cambridge dictionaries to your browser to your website

Definitions of “energy” in other dictionaries

Word of the Day

wave

to raise your hand and move it from side to side as a way of greeting someone, telling someone to do something, or adding emphasis to an expression

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

silver splicer noun

November 17, 2014
informal a person who marries in later life Newly retired and now newlywed – rise of the ‘silver splicers’ Reaching pension age becomes a trigger to tie the knot as baby-boomers begin to redefine retirement

Read More