DictionaryAI

Monday

MUN-day/ˈmʌn.deɪ/

PluralMondays

2 meanings of Monday

Practice

  1. 1
    day after Sundaynouncountable
    The day that comes after Sunday and before Tuesday.

    We go back to school on Monday.

    Monday is the busiest day at the store.

    UsageWrite it with a capital M. Say on Monday (not incorrect: in Monday).

  2. 2
    on that dayadverbCanadaUS
    On the day named Monday, when something happens.

    I'll call you Monday once I get to the office.

    We're leaving Monday for the trip.

    UsageUsed without on: see you Monday.

Practice

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Origin

It comes from Old English mōnandæġ, meaning "day of the moon", from Moon + day.

Checked 31 Oct 2026 · 3 facts