A2noun1K

Energy

UK /["/ˈenədʒi/"]/US /["/ˈenərdʒi/"]/

Definition

the strength, effort and enthusiasm required for physical or mental activity, work, etc.

In simple words: The ability to do work or cause change; a source of power.

Examples

  • I need a lot of energy to run a marathon.
  • Solar panels convert sunlight into energy for our homes.
  • Eating healthy food gives you more energy throughout the day.
  • He radiates positive energy wherever he goes.
  • Many athletes talk about how important it is to manage their energy.

Usage notes

Used in many contexts, including physics, health, and daily life. Generally appropriate in both casual and formal settings, but may be too technical in very informal conversations.

Grammar pattern

standalone noun

Memory hint

Think of 'energy' as 'ener-gize' — like a battery giving power.

Collocations

  • boundless
  • endless
  • inexhaustible
  • amount
  • level
  • great deal
  • be bursting with
  • be full of
  • have
  • flag
  • dissipate
  • drain away
  • level
  • reserves
  • bar
  • energy and enthusiasm
  • an outlet for your energy
  • time or energy
  • alternative
  • clean
  • green
  • amount
  • generate
  • produce
  • harness
  • production
  • consumption
  • use
  • a demand for energy
  • a form of energy
  • a source of energy

Synonyms

  • power
  • vitality
  • force
  • strength
  • dynamism

Antonyms

  • lethargy
  • exhaustion
  • tiredness

Common mistakes

  • Confused with 'energies' when talking about different types of power.
  • Using 'energy' as an uncountable noun incorrectly in some contexts.
  • Mistakenly using it to describe emotions instead of physical power.