Waste and wastes are unwanted or unusable materials. Waste is any substance which is discarded after primary use, or it is worthless, defective and of no use.

The term is often subjective (because waste to one person is not necessarily waste to another) and sometimes objectively inaccurate (for example, to send scrap metals to a landfill is to inaccurately classify them as waste, because they are recyclable). Examples include municipal solid waste (household trash/refuse), hazardous waste, wastewater (such as sewage, which contains bodily wastes (feces and urine) and surface runoff), radioactive waste, and others.


United Nations Environment Program

According to the Basel Convention,

United Nations Statistics Division, Glossary of Environment Statistics

European Union

Under the Waste Framework Directive, the European Union defines waste as "an object the holder discards, intends to discard or is required to discard."


There are many waste types defined by modern systems of waste management, notably including:

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Stop Wasting Time on Chaos, Prepare for 2027 Contest - Ruto to Odinga

All Africa 24 Mar 2023
Kisii -- President William Ruto has told Azimio leader Raila Odinga to stop 'planning chaos' and prepare for the 2027 contest .......

Arrowverse's Marc Guggenheim Feels Like He Wasted Time On DC Shows

Game Rant 08 Mar 2023
Marc Guggenheim, co-creator of the popular CW Arrowverse franchise, has expressed frustration with the unfolding DCEU reboot put forth by DC Studio co-CEOs Peter Safran and James Gunn ... ....

Most of us think we're wasting time on 'pointless' office meetings

TechRadar 08 Mar 2023
It found that 58% of a worker's day was spent in unnecessary meetings, rather than on the actual work they were hired to do. Although this figure is down on 2021, it has increased slightly since 2022, meaning this could spell a worrying new trend for businesses, if employees' characterization of these meetings is right....

Legislature wasting time on meaningless things

Bowling Green Daily News 05 Mar 2023
Legislature wasting time. What the heck is going on with our legislature. They are wasting time debating such meaningless items. Does it really matter when transgender people legally change their names? Does it matter that drag shows are stopped so they don’t infect children with bad ideas? They don’t do their acts on the sidewalk....