[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.
noun (modifier)
made to withstand hard wear, bad weather, etc: heavy-duty uniforms
subject to high import or export taxes

“durable, strong,” 1914; see heavy + duty.


Very active; highly productive: The sting identified 46 ”heavy-duty taggers”

[1940s+; fr the term for a particularly strong and durable machine, found by 1914]


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