useful
adjective
helpful for doing or achieving something
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Useful and effective and working correctly
efficient
adjective
something that is efficient works well and produces good results by using the available time, money, supplies etc in the most effective way
worthwhile
adjective
if something is worthwhile, it is worth the time, money, or effort that you spend on it
vocal fry
a speech habit in which a speaker lowers their voice at the end of a sentence
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dray
a type of cart pulled by a horse and used in the past for carrying barrels of beer
Open Dictionary
conflict mineral
a mineral which is mined in a place where there is armed conflict, and sold to help pay for weapons
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