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waste

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1waste/ˈweɪst/noun
pluralwastes
1waste
/ˈweɪst/
noun
pluralwastes
Learner's definition of WASTE  
[noncount]  : loss of something valuable that occurs because too much of it is being used or because it is being used in a way that is not necessary or effective
   b  [singular]  : an action or use that results in the unnecessary loss of something valuable
   c  [singular]  : a situation in which something valuable is not being used or is being used in a way that is not appropriate or effective
: material that is left over or that is unwanted after something has been made, done, used, etc.
[noncount]
[count]
— see also toxic waste
[noncount]  : the solid and liquid substances that are produced by the body : feces and urine
wastes [plural]literary  : a large and empty area of land : wasteland

a waste of space

chiefly British, informal
: a worthless person or thing

go to waste

: to not be used : to be wasted

haste makes waste

— see haste

lay waste to

— see 1lay
2waste/ˈweɪst/verb
wasteswastedwasting
2waste
/ˈweɪst/
verb
wasteswastedwasting
Learner's definition of WASTE  
[+ object]
: to use (something valuable) in a way that is not necessary or effective : to use more of (something) than is necessary
: to use (something or someone) in a way that does not produce a valuable result or effect : to fail to use (something or someone) in an appropriate or effective way — often used as (be) wasted
slang  : to kill or murder (someone)

waste away

[phrasal verb]
: to become thinner and weaker because of illness or lack of food

waste no time

: to do something quickly

waste not, want not

— used to say that if you never waste things you will always have what you need

waste your breath

— see breath
3waste/ˈweɪst/adjective
3waste
/ˈweɪst/
adjective
Learner's definition of WASTE  
always used before a noun
: of, relating to, or being material that is left over or unwanted after something has been made, done, used, etc.
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