English vocabulary for months: From basic names to advanced terms

Talking about time in English involves more than just memorizing January through December. To sound like a native speaker—or to navigate a professional office—you need to understand fiscal cycles, contract terms, and seasonal idioms.

The twelve months of the year

The standard calendar used globally is the Gregorian calendar. It consists of 12 months, totaling 365 days (or 366 in a leap year).

Essential calendar terminology

To communicate effectively about schedules, you need to go beyond the names of the months. Use these terms to describe how we organize time.

• Calendar: A system of organizing days for social, religious, commercial, or administrative purposes.
• Leap year: Occurring every four years, a leap year contains 366 days. February 29 is added to keep the calendar aligned with the Earth’s orbit around the sun.
• Lunar month: A month based on the cycles of the moon (approximately 29.5 days), commonly used in religious calendars.
• Quarter (Q1, Q2, Q3, Q4): A three-month period used heavily in business and academic settings.
• Fiscal year: A one-year period used by companies and governments for financial reporting, which may not align with the calendar year (January–December).

Business English: Navigating month-end and deadlines

In professional environments, month-based vocabulary shifts from casual dates to financial deadlines. If you are handling payroll or project management, these terms are non-negotiable.

Common temporal markers

• BOM (Beginning of month): Refers to the start of a new month, usually the 1st through the 5th.
• Mid-month: Around the 15th of the month.
• EOM (End of month): Used to denote deadlines or the final days of a period.
• Month-to-month: A type of contract (often for housing or software) that renews automatically every 30 days rather than requiring a long-term commitment.

Frequency and intervals

• Monthly: Happening once every month.
• Bi-monthly: This can be ambiguous. It can mean twice a month (semi-monthly) or once every two months. Always clarify the context.
• Quarterly: Occurring every three months (four times a year).

Better ways to describe the order of months

If you want to sound more natural or academic, use these adjectives to describe how months relate to one another.

• Consecutive / Successive: Months that follow one another without interruption (e.g., “It rained for three successive months”).
• Preceding: The month that came before the current one.
• Subsequent: The month that follows or comes after.
• Fleeting: Used to describe months that seem to pass very quickly.

Idioms and figurative expressions about months

English speakers often use months metaphorically. Here are the most common expressions you will encounter:

• A month of Sundays: An idiom meaning a very long period of time (e.g., “I haven’t seen him in a month of Sundays!”).
• April showers bring May flowers: You’ll hear this often in the spring. It’s a way of staying positive during rainy weather by focusing on the blooming flowers coming next month.
• The dog days of summer: Refers to the hottest, most sweltering weeks of July and August.
• A May-December romance: Describes a relationship where there is a significant age gap between the two partners.

Frequently asked questions about ‘month’ vocabulary

Months vocabulary quiz

Multiple-choice questions

1. Which term describes a contract that renews every 30 days without a long-term commitment? a) Bi-monthly b) Month-to-month c) Fiscal year d) Consecutive

2. If a company reports its earnings every three months, it is reporting on a _______ basis. a) Monthly b) Quarterly c) Fortnightly d) Annual

3. What does “EOM” stand for in a business context? a) Energy of Month b) Early on Monday c) End of Month d) Every Other Month

4. Which month was originally the seventh month in the ancient Roman calendar? a) July b) August c) September d) December

5. How many days does a leap year have? a) 360 b) 364 c) 365 d) 366

6. Which expression refers to the hottest weeks of summer? a) April showers b) A month of Sundays c) The dog days of summer d) Fleeting months

7. If something happens “semi-monthly,” how often does it occur? a) Once every two months b) Twice a month c) Once every six months d) Every two weeks exactly

8. Which abbreviation is most commonly used for September? a) Sep. b) Spt. c) Sept. d) Se.

9. What is a “fortnight”? a) Four nights b) Two weeks c) One month d) Ten days

10. Which adjective describes months that follow each other in a continuous order? a) Preceding b) Subsequent c) Consecutive d) Fiscal

Fill-in-the-blank questions

1. A _______ year is a 12-month period used by a company for financial reporting that may not start in January.
2. The _______ calendar is the internationally accepted civil calendar used today.
3. The proverb “April showers bring _______ flowers” suggests that hardship leads to beauty.
4. If today is March, February is the _______ month.
5. A _______ romance describes a relationship between two people with a large age difference.
6. The phrase “a month of _______” is an idiom meaning a very long period of time.
7. To keep the calendar aligned with the Earth’s orbit, an extra day is added to the month of _______.
8. _______ is the term for the beginning of the month.
9. A _______ month is based on the cycles and phases of the moon.
10. The adjective _______ describes a month that follows or comes after another.

Answer key

Videos to complement your learning

Basic calendar expressions (days, weeks, months, years, seasons)

Months of the year song

As you continue your English learning journey, focus on using these words in context. Try setting your digital calendar to English or using terms like EOM and quarterly in your next workplace meeting to reinforce what you have learned.

Join the conversation

We want to hear from you! Which month is your favorite, and do you have a specific reason or a favorite seasonal tradition? Or, is there a particular English idiom about time that you find confusing?

Leave a comment below with your thoughts or questions. We respond to every comment to help you master these concepts and reach your goals.

Ready to expand your English skills further? Check out our guides on days of the week, seasonal vocabulary, and telling time in English to complete your mastery of the calendar.