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Synonyms

heavy-duty

American  
[hev-ee-doo-tee, -dyoo-] / ˈhɛv iˈdu ti, -ˈdyu- /

adjective

  1. providing an unusual amount of power, durability, etc..

    heavy-duty machinery; heavy-duty shoes.

  2. very important, impressive, or serious.

    heavy-duty involvement; heavy-duty questions.


heavy-duty British  

noun

  1. made to withstand hard wear, bad weather, etc

    heavy-duty uniforms

  2. subject to high import or export taxes

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of heavy-duty

First recorded in 1910–15

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.

The Office for Product Safety & Standards said if the sand is still in its packaging it should be placed in a heavy-duty plastic bag, double taped securely and stored away from children.

From BBC • May 1, 2026

"There is likely to be higher demand for electric heavy-duty vehicles as fleet owners try to minimise their vulnerability to volatile diesel costs," he said.

From Barron's • Apr. 29, 2026

Volvo sees the European heavy-duty truck market at 310,000 vehicles in 2026, up from a previous estimate of 305,000 and it also raised its Brazilian and Indian truck market forecasts.

From The Wall Street Journal • Apr. 24, 2026

Beyond its free version of ChatGPT, OpenAI offers an $8 Go plan for casual users, the standard $20 Plus plan and a $200 Pro tier for heavy-duty developers.

From MarketWatch • Mar. 25, 2026

The door had a brushed brass plate with a slot and heavy-duty handle.

From "Native Speaker" by Chang-rae Lee