energy
Translation
energy, power, vitality
Examples
I don't have the energy to go out tonight.
I don't have the energy to go out tonight.
We need to save energy at home.
We need to save energy at home.
The world needs renewable energy sources.
The world needs renewable energy sources.
Grammar Patterns
to have energy to have physical/mental strength I have no energy today.
to save/use energy to conserve/use power We should save energy.
((adjective)) energy a type of power Solar energy is clean.
Similar Words
Synonyms: power, strength, vitality, stamina; Antonyms: lethargy, weakness
Etymology
From Greek 'energeia' meaning 'activity', which comes from 'en-' (in) + 'ergon' (work).
Memory Tips
Remember the 'E' in Einstein's famous equation E=mc², which stands for 'energy'.