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Definitions

powerhouse

[pou-er-hous] / ˈpaʊ ərˌhaʊs /

ADJECTIVE

effective

Synonyms

STRONGEST

active adequate compelling competent direct efficient forceful impressive potent powerful practical successful useful valid

STRONG

effectual efficacious

WEAK

able big-wheel capable cogent convincing emphatic energetic forcible having lead in pencil live moving on the ball operative persuasive playing hardball producing resultant serviceable serving sound striking telling trenchant virtuous wicked yielding

Antonyms

STRONGEST

helpless impotent inadequate incapable incompetent ineffective inefficient insufficient unable useless weak worthless

STRONG

unproductive unsuccessful

WEAK

fruitless inoperative

ADJECTIVE

forceful

Synonyms

STRONGEST

cogent commanding compelling convincing dynamic energetic forcible persuasive strong vehement vigorous violent

WEAK

ball of fire big-wheel bullish coming on strong constraining dominant electric elemental gutsy mighty pithy potent puissant punch punchy steamroller stringent take-charge takeover telling titanic virile weighty

Antonyms

STRONGEST

apathetic idle impotent inactive ineffective lethargic mild moderate passive weak

WEAK

feeble meek unforceful

ADJECTIVE

hard-hitting

Synonyms

STRONGEST

compelling pithy

WEAK

ball of fire bullish cogent coming on strong commanding constraining convincing dominant dynamic dynamical effective electric elemental energetic forcible gutsy mighty persuasive potent powerful puissa

ADJECTIVE

mighty

Synonyms

STRONGEST

potent robust

WEAK

boss doughty hardy indomitable lusty muscular omnipotent puissant stalwart steamroller stout strapping strengthy strong strong as ox sturdy vigorous wieldy

Antonyms

STRONGEST

weak

WEAK

delicate insignificant powerless small tiny unimportant

ADJECTIVE

muscular

Synonyms

STRONGEST

athletic brawny burly powerful robust sinewy stout strapping sturdy vigorous wiry

WEAK

able-bodied bruising fibrous hefty herculean hulky husky lusty mighty muscled pumped-up ripped ropy stalwart stringy strong tiger tough well-built

Antonyms

STRONGEST

impotent skinny slight small thin weak

WEAK

delicate flabby infirm

ADJECTIVE

potent

Synonyms

STRONGEST

compelling dominant dynamic great impressive influential persuasive powerful robust strong useful vigorous

STRONG

stiff

WEAK

almighty ball of fire cogent commanding convincing efficacious forcible full-bodied lusty mighty puissant punchy spanking sturdy telling trenchant

Antonyms

STRONGEST

inactive ineffective ineffectual infirm insignificant soft unhealthy unimportant weak

WEAK

fragile helpless impotent incapable

ADJECTIVE

robust

Synonyms

STRONGEST

booming hearty hefty potent powerful prosperous sturdy tough vigorous

WEAK

able-bodied athletic boisterous brawny built concentrated fit fit as fiddle flourishing full-bodied hale hardy husky in fine fettle in good health in good shape in the pink live lusty muscular peppy prospering roaring robustious robustuous rough rugged sinewy snappy sound stout strapping thriving tiger vital well wicked zappy zippy

Antonyms

STRONGEST

fragile impotent incapable ineffective lethargic small unstable weak wobbly

WEAK

flabby infirm soft unhealthy

ADJECTIVE

stalwart

Synonyms

STRONGEST

dependable fearless indomitable intrepid redoubtable staunch stout tenacious vigorous

STRONG

bold bound brave daring husky solid steamroller tough

WEAK

athletic bound and determined brawny brick-wall courageous dauntless dead set on forceful gutsy hanging tough hefty lusty muscular nervy robust rugged sinewy spunky stouthearted strapping sturdy substantial unafraid undaunted valorous

Antonyms

STRONGEST

afraid timid undependable unreliable weak yielding

STRONG

cowardly fearful meek quiet reticent retiring shy soft vulnerable

ADJECTIVE

strapping

Synonyms

STRONGEST

burly hulking sturdy

STRONG

hulky

WEAK

brawny hefty hunky husky ox powerful robust stalwart stout tall vigorous well-built

Antonyms

WEAK

attenuated skinny slight small thin weak

ADJECTIVE

sturdy

Synonyms

STRONGEST

bulky hearty hulking muscular powerful robust rugged stiff stout strapping strong

WEAK

athletic built to last determined firm flourishing hardy hefty husky lusty resolute secure sound stalwart staunch steadfast stouthearted strong-arm substantial tenacious tough unyielding vigorous well-built well-made

Antonyms

STRONGEST

calm delicate easy feeble flabby infirm mild moderate skinny small soft thin tiny unhealthy weak

WEAK

unstable wobbly

NOUN

authority

Synonyms

STRONGEST

force government jurisdiction rule

STRONG

ascendancy authorization beef charge clout command credit domination dominion edge esteem goods guts influence juice jump license mastery might permission permit pizazz pow prerogative prestige punch right ropes say say-so steam strength stuff supremacy sway warrant weight word

WEAK

leg up might and main strong arm upper hand what it takes whip hand

Antonyms

STRONG

breach break disadvantage inferiority lack lethargy powerlessness prohibition subordination weakness

NOUN

engine

Synonyms

STRONGEST

appliance diesel generator instrument motor power plant tool transformer turbine weapon

STRONG

agent apparatus barrel contrivance cylinder dynamo fan horses implement means mechanism piston pot

WEAK

power train putt-putt rubber band what's under the hood

NOUN

potence

Synonyms

STRONG

backbone body brawn brawniness clout courage durability energy firmness force fortitude hardiness health healthiness lustiness might muscle nerve physique pith potency pow power powerfulness puissance robustness security sinew sock soundness stability stableness stalwartness steadiness steamroller stoutness sturdiness substance tenacity toughness verdure vigor vim vitality zip

WEAK

brute force strong arm thew

Antonyms

STRONG

apathy cowardice enervation fear idleness impotence inability inactivity incompetence infirmity insecurity instability laziness lethargy powerlessness timidity uncertainty weakness

NOUN

powerfulness

Synonyms

STRONG

backbone body brawn brawniness clout courage durability energy firmness force fortitude hardiness health healthiness lustiness might muscle nerve physique pith potence potency pow power puissance robustness security sinew sock soundness stability stableness stalwartness steadiness steamroller stoutness sturdiness substance tenacity toughness verdure vigor vim vitality zip

WEAK

brute force strong arm thew

Antonyms

STRONG

apathy cowardice enervation fear idleness impotence inability inactivity incompetence infirmity insecurity instability laziness lethargy powerlessness timidity uncertainty weakness

NOUN

power plant

Synonyms

STRONGEST

power station station

WEAK

atomic power plant generating station hydroelectric plant hydroelectric scheme nuclear power plant power source

NOUN

professional

Synonyms

STRONGEST

artist expert pro specialist

STRONG

adept artiste authority brain egghead hotshot pundit shark star superstar virtuoso whiz wizard

WEAK

old hand old pro old war-horse phenom proficient whiz kid

Antonyms

STRONG

amateur rookie

WEAK

apprentice greenhorn

NOUN

say-so

Synonyms

STRONG

ascendancy authorization beef charge clout command control credit domination dominion edge esteem force goods government guts influence juice jump jurisdiction license mastery might permission permit pizazz pow power prerogative prestige punch right ropes rule say sovereignty steam strength stuff supremacy sway warrant weight word zap

WEAK

leg up might and main strong arm upper hand what it takes whip hand

Antonyms

STRONG

breach break disadvantage impotence inability incapacity incompetence inefficiency inferiority lack lethargy powerlessness prohibition submission subordination subservience surrender weakness yielding

NOUN

strength

Synonyms

STRONGEST

clout courage durability energy firmness fortitude health power stability tenacity toughness vigor vitality

STRONG

backbone body brawn brawniness force hardiness healthiness lustiness might muscle nerve physique pith potency pow robustness security sinew sock soundness stableness stalwartness steadiness steamroller stoutness sturdiness substance verdure vim zip

WEAK

brute force strong arm

Antonyms

STRONGEST

cowardice idleness inactivity infirmity instability lethargy weakness

STRONG

powerlessness

WEAK

disadvantage enervation lack

NOUN

thew

Synonyms

WEAK

backbone body brawn brawniness brute force clout courage durability energy firmness force fortitude hardiness health healthiness lustiness might muscle nerve physique pith potence potency pow power powerfulness puissance robustness security sinew sock soundness stability stableness stalwartness steadiness steamroller stoutness strong arm sturdiness substance tenacity toughness verdure vigor vim vitality zip

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“Nobody Wants This” “Despite the absence of last year’s comedy powerhouse ‘The Studio,’ the competition remains stiff with long-running heavyweights like ‘Hacks,’ ‘The Bear,’ ‘Abbott’ and ‘Only Murders’ all in the running once again.

From Los Angeles Times • May 20, 2026

Hastings had been a wonderful rugby player, a powerhouse, a centre with strength and ferocious will.

From BBC • May 17, 2026

The company is awaiting full approval for its first commercial powerhouse, Aurora, at Idaho National Laboratory.

From Barron's • May 12, 2026

After a few games, he switched to a rival Catholic powerhouse known for star receivers.

From The Wall Street Journal • May 10, 2026

On camera he's a take-charge, my-words-will-blow-you-down, blustering powerhouse of a man.

From "How It Went Down" by Kekla Magoon

powerhouse

Example Sentences

Related Words