drown one's sorrows
drown one's sorrows or drown one's troubles {v. phr.}, {informal}
To drink liquor to try to forget something unhappy.
When his wife was killed in an auto accident, Mr. Green tried to drown his sorrows in whiskey.
When Fred lost his job and had to give up his new car, he tried to drown his troubles at the nearest tavern.
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Source: A Dictionary of American Idioms