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1. Having or capable of exerting power.
2. Effective or potent: a powerful drug.
3. Chiefly Upper Southern US Great: "[Everybody had] a powerful lot to say about faith and good works and free grace ... and I don't know what all" (Mark Twain).
adv. Chiefly Upper Southern US
Very: It was powerful humid.

pow′er·ful·ly adv.
pow′er·ful·ness n.
Our Living Language In the Upper Southern United States the words powerful and mighty are intensives used frequently in the same way as very: Your boy's grown powerful big. The new baby is mighty purty. Powerful is used as an adjective in some expressions: The storm did a powerful lot of harm. In the same dialect region the noun power has, in addition to its standard meaning, the sense of "a large number or amount." This sense appears in the Oxford English Dictionary as common in dialectal British English of the 1700s and 1800s: "It has done a power of work" (Charles Dickens). All these derivative senses of power and might take advantage of the notion of strength inherent in these nouns, making them natural intensives.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.powerfulness - possession of controlling influencepowerfulness - possession of controlling influence; "the deterrent power of nuclear weapons"; "the power of his love saved her"; "his powerfulness was concealed by a gentle facade"
quality - an essential and distinguishing attribute of something or someone; "the quality of mercy is not strained"--Shakespeare
effectiveness, potency, strength - capacity to produce strong physiological or chemical effects; "the toxin's potency"; "the strength of the drinks"
valence, valency - (chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent)
valence, valency - (biology) a relative capacity to unite or react or interact as with antigens or a biological substrate
preponderance - superiority in power or influence; "the preponderance of good over evil"; "the preponderance of wealth and power"
puissance - power to influence or coerce; "the puissance of the labor vote"
persuasiveness, strength - the power to induce the taking of a course of action or the embracing of a point of view by means of argument or entreaty; "the strength of his argument settled the matter"
irresistibility, irresistibleness - the quality of being overpowering and impossible to resist
interestingness, interest - the power of attracting or holding one's attention (because it is unusual or exciting etc.); "they said nothing of great interest"; "primary colors can add interest to a room"
chokehold, stranglehold, throttlehold - complete power over a person or situation; "corporations have a stranglehold on the media"; "the president applied a chokehold to labor disputes that inconvenienced the public"
sway - controlling influence
influence - a power to affect persons or events especially power based on prestige etc; "used her parents' influence to get the job"
repellant, repellent - the power to repel; "she knew many repellents to his advances"
control - power to direct or determine; "under control"
jurisdiction, legal power - (law) the right and power to interpret and apply the law; "courts having jurisdiction in this district"
disposal - the power to use something or someone; "used all the resources at his disposal"
free will, discretion - the power of making free choices unconstrained by external agencies
veto - the power or right to prohibit or reject a proposed or intended act (especially the power of a chief executive to reject a bill passed by the legislature)
effectiveness, effectivity, effectuality, effectualness - power to be effective; the quality of being able to bring about an effect
impotence, impotency, powerlessness - the quality of lacking strength or power; being weak and feeble


The state or quality of being physically strong:
brawn, might, muscle, potence, potency, power, puissance, sinew, strength, thew (often used in plural).
نُفوذ، قُوَّه
afl, kraftur


(ˈpauə) noun
1. (an) ability. A witch has magic power; A cat has the power of seeing in the dark; He no longer has the power to walk.
2. strength, force or energy. muscle power; water-power; (also adjective) a power tool (=a tool operated by electricity etc. not by hand).
3. authority or control. political groups fighting for power; How much power does the Queen have?; I have him in my power at last
4. a right belonging to eg a person in authority. The police have the power of arrest.
5. a person with great authority or influence. He is quite a power in the town.
6. a strong and influential country. the Western powers.
7. the result obtained by multiplying a number by itself a given number of times. 2  2  2 or 23 is the third power of 2, or 2 to the power of 3.
ˈpowered adjective
supplied with mechanical power. The machine is powered by electricity; an electrically-powered machine.
ˈpowerful adjective
having great strength, influence etc. a powerful engine; He's powerful in local politics.
ˈpowerfully adverb
ˈpowerfulness noun
ˈpowerless adjective
having no power. The king was powerless to prevent the execution.
ˈpowerlessness noun
power cut/failure
a break in the electricity supply. We had a power cut last night.
ˌpower-ˈdriven adjective
worked by electricity or other mechanical means, not by hand.
power point
a socket on a wall etc into which an electric plug can be fitted.
power station
a building where electricity is produced.
be in power
(of a political party) to be the governing party.
References in classic literature ?
And Ethelred, who was by nature of a doughty heart, and who was now mighty withal, on account of the powerfulness of the wine which he had drunken, waited no longer to hold parley with the hermit, who, in sooth, was of an obstinate and maliceful turn, but, feeling the rain upon his shoulders, and fearing the rising of the tempest, uplifted his mace outright, and, with blows, made quickly room in the plankings of the door for his gauntleted hand; and now pulling therewith sturdily, he so cracked, and ripped, and tore all asunder, that the noise of the dry and hollow-sounding wood alarmed and reverberated throughout the forest.
On the contrary, they speak of Christianity's superiority on the grounds that the lives of Christ's followers who overcome sickness, barrenness, poverty, and life-threating problems are a testimony to the powerfulness of the Christian God.
Solution is impossible without President al-Assad," Del Ponte, also a member in the UN Commission of Inquiry on Syria, told Swiss RTS TV in an interview broadcast on Wednesday, pointing out to "the President's popular powerfulness on the ground.
Individuals scoring high on this dimension not only enjoy competition, but also derive feelings of superiority and powerfulness from competition.
These last two quotes of Diop show as a fact of history Islam's powerfulness in political dismantling and destroying psychological identity where African civilizations are concerned.
The powerfulness is being continuously talked about by people below.
The powerfulness of the test suite allows users to significantly reduce costs by accelerating their test development cycles.
Multi-Layer Perceptron (MLP) BPNN is one of the most preferred NN in civil engineering related applications of NN because of its powerfulness, versatility, and simplicity (TRB Circular 1999; Adeli 2001).
Unjust exile comes from his "pelican daughters," and it thrusts Lear from the autocratic powerfulness of treating his kingdom like his purse to the utter powerlessness of seeking a roof in a storm.
She believes that when she began to engage in a spirituality that embraces "the God within" and a sense of powerfulness, her recovery blossomed to a greater degree than it would have with a straight reading of the Steps alone.
Y: Well, I teach using a simple method, again not my invention, but then people often forget powerfulness of the simple, common technique.
He warned that the common enemies of Iran and Egypt oppose the progress and powerfulness of both states, and said, "The enemies and ill-wishers of the two nations are the same colonialists in the history who are out of the region and oppose friendship between Iran and Egypt, but Tehran and Cairo should stand on the side of each other.