- the capacity for vigorous activity; available power: I eat chocolate to get quick energy.
- an adequate or abundant amount of such power: I seem to have no energy these days.
- Often energies. a feeling of tension caused or seeming to be caused by an excess of such power: to work off one's energies at tennis.
- an exertion of such power: She plays tennis with great energy.
- the habit of vigorous activity; vigor as a characteristic: Foreigners both admire and laugh at American energy.
- the ability to act, lead others, effect, etc., forcefully.
- forcefulness of expression: a writing style abounding with energy.
- Physics. the capacity to do work; the property of a system that diminishes when the system does work on any other system, by an amount equal to the work so done; potential energy. Symbol: E
- any source of usable power, as fossil fuel, electricity, or solar radiation.
Origin of energy
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for energy
I think a lot of it has to do with the attitude and the energy behind it and the honesty.‘Black Dynamite’ Presents Police Brutality: The Musical
January 9, 2015
The energy economy has always been a fixture of Texas life, and that has not changed.Will Texas Stay Texan?
December 29, 2014
Chickens require significantly less land, water, and energy than all other meat options except farmed salmon.The History of the Chicken: How This Humble Bird Saved Humanity
December 27, 2014
Energy is sucked from them, the world around them becomes impossible—the Babadook of grief and loss exerts its force everywhere.Grief: The Real Monster in The Babadook
December 19, 2014
If I may say so, you need to get past this issue that is sapping your energy and demoralizing your followers.Do LGBTs Owe Christians an Olive Branch? Try The Other Way Around
December 14, 2014
He had sat in the background, but he had found both money and energy.Explorations in Australia
He rose with the blow; all his energy, from wrist to instep, was in that lifting drive.Way of the Lawless
Then abruptly, the young man spoke with the energy of perfect faith in the woman.Within the Law
You have health and energy, and you have youth, which I haven't.K
Mary Roberts Rinehart
The Satanic energy of this outburst proclaims its author, Marlowe.The Man Shakespeare
- intensity or vitality of action or expression; forcefulness
- capacity or tendency for intense activity; vigour
- vigorous or intense action; exertion
- the capacity of a body or system to do work
- a measure of this capacity, expressed as the work that it does in changing to some specified reference state. It is measured in joules (SI units)Symbol: E
- a source of powerSee also kinetic energy, potential energy
Word Origin and History for energy
1590s, "force of expression," from Middle French énergie (16c.), from Late Latin energia, from Greek energeia "activity, operation," from energos "active, working," from en "at" (see en- (2)) + ergon "work, that which is wrought; business; action" (see urge (v.)).
Used by Aristotle with a sense of "force of expression;" broader meaning of "power" is first recorded in English 1660s. Scientific use is from 1807. Energy crisis first attested 1970.
- The capacity for work or vigorous activity; vigor; power.
- The capacity of a physical system to do work.
- The capacity or power to do work, such as the capacity to move an object (of a given mass) by the application of force. Energy can exist in a variety of forms, such as electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another. It is measured by the amount of work done, usually in joules or watts. See also conservation of energy kinetic energy potential energy. Compare power work.