blue Monday

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

藍色星期一, 週一症候群

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

:
I always get that blue Monday feeling after a long holiday.
長假過後我總是有那種藍色星期一的感覺。
Despite the sunny weather, it was a real blue Monday for him.
儘管天氣晴朗,對他來說這真是個藍色星期一