(~s)
Frequency: The word is one of the 3000 most common words in English.
1.
Depression is a mental state in which you are sad and feel that you cannot enjoy anything, because your situation is so difficult and unpleasant.
Mr Thomas was suffering from ~...
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2.
A ~ is a time when there is very little economic activity, which causes a lot of unemployment and poverty.
He never forgot the hardships he witnessed during the Great Depression of the 1930s.
= slump
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3.
A ~ in a surface is an area which is lower than the parts surrounding it.
...an area pockmarked by rain-filled ~s.
= hollow
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4.
A ~ is a mass of air that has a low pressure and that often causes rain.
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