Category: Science & TechnologyPart of speech: nounDifficulty: Common

energy

/energy/Roman
US/ˈɛnɝdʒi/
UK/ˈɛnədʒi/

English meaning: Energy

Definition

The capacity to do work or cause change, existing in forms such as heat, light, and motion.

Example

The sun provides almost all the energy that drives life and weather on our planet.

Another example: After a good night's sleep she felt full of energy and ready for anything.

Usage — When, Where & How

A common noun with two senses: physical energy in science (kinetic energy), and personal vitality (full of energy). Usually uncountable, but 'energies' is used for efforts (devote your energies). The 'energy' industry sense is also frequent (energy bills).

Etymology & Origin

English — Origin & History

From Greek 'energeia' (activity, operation), from 'en-' (in) plus 'ergon' (work).

Synonyms

  • power
  • vigor
  • vitality
  • vigour
  • push
  • vim
  • get-up-and-go
  • department of energy
  • energy department

Antonyms / Opposites

  • lethargy
  • exhaustion

Related Words

Common Collocations

  • renewable energy
  • solar energy
  • full of energy
  • energy bills
  • kinetic energy
  • save energy

Word Forms

energy (n); energies (pl); energetic (adj); energize/energise (v)

Word Tools

3 syllables

Tools & Calculators

Literary Heritage

To thine own self be true, and it must follow, as the night the day, thou canst not then be false to any man.

/To thine own self be true/

Be honest with yourself — and as naturally as night follows day, you will be unable to be false to others.

William Shakespeare · Playwright & Poet · 1564–1616

Hamlet, Act II

Hamlet, II.i — Polonius's parting words to Laertes; the most quoted line in Shakespeare

I'm nobody! Who are you? Are you nobody, too?

/I'm nobody! Who are you?/

I am nobody — and that quiet anonymity is more honest than the noise of public fame.

Emily Dickinson · Poet · 1830–1886

Poems

Poem 288 — Dickinson's subversive celebration of solitude over social recognition

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English
Script
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