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


providing an unusual amount of power, durability, etc.: heavy-duty machinery; heavy-duty shoes.
very important, impressive, or serious: heavy-duty involvement; heavy-duty questions.

Origin of heavy-duty

First recorded in 1910–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for heavy-duty

British Dictionary definitions for heavy-duty


noun (modifier)

made to withstand hard wear, bad weather, etcheavy-duty uniforms
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

Word Origin and History for heavy-duty



"durable, strong," 1914; see heavy + duty.

Online Etymology Dictionary, © 2010 Douglas Harper