get one down
get one down {v. phr.}, {informal}
1. To make (someone) unhappy; cause low spirits; cause discouragement.
Low grades are getting Helen down.
Three straight losses got the team down.
2. To swallow; digest.
The medicine was so bitter I couldn't get it down.
3. To depress a person's spirit.
Working at such an awful job got Mike down.
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Source: A Dictionary of American Idioms