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

Now under the sleek, backlit keyboard, this laptop is powered by a potent Intel Core Ultra 7 (Series 3) processor that’s spectacular for content creation (think 4K video editing), gaming, AI tasks, and general heavy-duty multitasking. — Kelsey Fogarty, PC Magazine, 11 Aug. 2026

Fast Charging For Phones The DC side handles heavy-duty charging with its 140W total output, which is dynamically shared across the four USB ports. — Mark Sparrow, Forbes.com, 9 Aug. 2026

That practical knowledge could help refine the mobile fueling model as more heavy-duty fleets evaluate alternatives to diesel across the United States. — Aamir Khollam, Interesting Engineering, 7 Aug. 2026

The new vending machines were custom-designed for the subway with heavy-duty steel bodies and big LED screens for advertising. — Anne Kadet, Curbed, 7 Aug. 2026