heavy duty

/ˈhɛviˌduti/
adjective
  1. Designed to withstand hard use, wear, or pressure; very strong and durable.
    • We bought a heavy-duty tent for our camping trip in the mountains.
    • The mechanic used heavy-duty gloves to handle the sharp metal parts.
    • This heavy-duty washing machine can clean large loads of work clothes.
  2. Very serious, intense, or demanding; requiring a lot of effort or attention.
    • She took on a heavy-duty project that required months of research.
    • The team faced heavy-duty negotiations to finalize the contract.
    • After a heavy-duty workout, he needed to rest for an hour.
What does "heavy duty" mean? | whatsthatwordmean | whatsthatwordmean