blue Monday

US /bluː ˈmʌn.deɪ/
UK /bluː ˈmʌn.deɪ/
"blue Monday" picture
1.

a feeling of sadness or depression experienced on a Monday, especially after a weekend of rest or enjoyment

:
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I always get that blue Monday feeling after a long holiday.
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Despite the sunny weather, it was a real blue Monday for him.
:
Monday bluesMonday dread
:
mondaybluebluesCyber Mondaynavy blueblue cheeserhythm and blues