Monday

noun

Mon·​day ˈmən-(ˌ)dā 

-dē

plural Mondays

: the day of the week between Sunday and Tuesday see also easter monday

Mondays

ˈmən-(ˌ)dāz, 

-dēz 

adverb

works late Mondays [=every Monday]

Examples of Monday in a Sentence

I had lunch with her last Monday.

I'll be seeing her again next Monday.

My birthday falls on a Monday this year.

Next week I'll arrive on Monday and leave on Friday.

I will arrive on Monday morning.

Recent Examples on the Web

Rainfall will ramp up on the Big Island and Maui by Sunday afternoon, spreading to the other islands later Sunday night into Monday. — Tyler Ory, CNN Money, 23 Aug. 2026

The Contra Costa County District Attorney on Friday charged 32-year-old Sergio Rivera-Vega with three counts of murder on Friday and is expected to add a fourth count on Monday. — Rick Hurd, Mercury News, 23 Aug. 2026

The situation was expected to improve on Sunday and certainly by Monday. — ABC News, 23 Aug. 2026

Analog Music Shop — which so far seems to be the only source of official information about the track — reported that Rodrigo’s plan is to send it out wide to the world on Monday. — Chris Willman, Variety, 22 Aug. 2026

Word History

Etymology

Middle English, from Old English mōnandæg; akin to Old High German mānatag Monday; akin to Old English mōna moon and to Old English dæg day

First Known Use

before the 12th century, in the meaning defined above

Phrases Containing Monday

• Easter Monday
• Monday-morning quarterback

Rhymes for Monday

• bundy
• fundi
• grundy
• gundy

Kids Definition

Monday

noun

Mon·​day ˈmən-dē 

: the second day of the week

Etymology

Old English mōnandæg "Monday," literally "the moon's day," a translation of Latin dies Lunae "day of the moon"

Word Origin

In ancient times, it was believed that there were seven "planets," one of which was the moon. The seven days of the week were named after the seven "planets" in Latin. One of the days was named dies Lunae, which means "day of the moon." The Latin name was later translated into other languages. In Old English, dies Lunae became mōnandæg. The word Monday comes from the Old English mōnandæg.