Language: Old English
Origin: monandæg, from a translation of Latin lunae dies 'day of the moon'


Mon‧day [uncountable and countable] written abbreviation Mon.
TMC the day between Sunday and Tuesday
on Monday
It was raining on Monday.
The president announced Monday that he would cancel the debt. American English
Monday morning/afternoon etc
Let's go out for a meal on Monday night.
last Monday
Kelly arrived last Monday.
this Monday
The UK office will open for business this Monday.
next Monday (=Monday of next week)
Shall we meet next Monday?
a Monday (=one of the Mondays in the year)
My birthday's on a Monday this year.

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