Synonyms of heavy-duty

heavy-duty

adjective

ˈhe-vē-ˈdü-tē 

1

as in intensive

extreme in degree, power, or effect

some heavy-duty lobbying on the part of the president was necessary in order to get the bill passed

Synonyms & Similar Words

• intensive
• intense
• heavy
• fierce
• deep
• ferocious
• terrible
• furious
• violent
• acute
• vicious
• profound
• explosive
• exquisite
• blistering
• fearsome
• dreadful
• fearful
• vehement
• ghastly
• hard
• excruciating
• hellacious
• keen
• frightful
• intensified
• almighty
• concentrated
• harsh
• enhanced
• heightened
• aggravated
• severe
• exhaustive
• thorough
• rigorous
• magnified
• accentuated
• stressed
• deepened
• emphasized

Antonyms & Near Antonyms

• light
• soft
• moderate
• weak
• feeble
• shallow
• superficial
• qualified
• decreased
• moderated
• eased
• toned (down)
• reduced
• subdued
• diminished
• lightened
• alleviated
• lessened
• abated

2

as in powerful

having great power or influence

a group of heavy-duty politicians and other notables attended the gala

Synonyms & Similar Words

• powerful
• influential
• significant
• strong
• important
• potent
• heavy
• mighty
• prominent
• senior
• top
• puissant
• high-level
• capable
• efficient
• effective
• outstanding
• robust
• distinguished
• famous
• competent
• great
• dominant
• celebrated
• able
• renowned
• notorious
• notable
• prestigious
• vigorous
• dynamic
• famed
• illustrious
• authoritarian
• eminent
• high-powered
• noteworthy
• autocratic
• tyrannical
• despotic
• energetic
• magisterial
• forceful
• dictatorial
• noble
• preeminent

Antonyms & Near Antonyms

• little
• weak
• unimportant
• insignificant
• powerless
• helpless
• flimsy
• impotent
• feeble
• frail
• infirm
• obscure
• anonymous
• unknown
• nameless
• ineffective
• incapable
• unskilled
• incompetent
• unqualified
• unfit
• inept
• uncelebrated
• inexpert
• unskillful

Example Sentences

Recent Examples of heavy-duty

The labor union representing truck drivers sued California on Wednesday over new rules that allow the testing and eventual deployment of heavy-duty driverless trucks on the state’s roads and highways. — Sharon Bernstein, Sacbee.com, 5 Aug. 2026

Gloves combine heavy-duty heat resistance with a flexible, comfortable fit for grilling, smoking, cooking and handling hot equipment. — ABC News, 3 Aug. 2026

Add two or three gallons of hot water to a large bucket, sink, or plastic tub and add at least 1/2 cup of a heavy-duty degreaser (degreasing dish soap or an industrial cleaner). — Mary Marlowe Leverette, The Spruce, 2 Aug. 2026

Along with the heavy-duty foundation raft, the tower consisted of a hollow concrete core running the complete height of the building, tapering from 35 ft (11 m) at the base to 22 ft (7 m) at the top, with a corresponding thinning of the core walls. — David Szondy august 01, New Atlas, 1 Aug. 2026