Bi-weekly vs Semi-weekly

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What’s the difference between them?



Bi-weekly means occurring or done every two weeks.


1. I get paid bi-weekly.

2. We have bi-weekly meetings to review progress.

3. I'm going to set up a bi-weekly reminder so I don't forget to pay bills.



Semi-weekly means occurring twice a week.


1. The semi-weekly meeting takes place on Mondays and Thursdays.

2. The semi-weekly newspaper was delivered to our doorstep every Tuesday and Friday.

3. She tried to keep up with the news by reading the semi-weekly magazine.

Learn similar and opposite words to spot the difference




1. Fortnightly

2. Semi-monthly

3. Twice a month

4. Every other week

5. Alternate weeks

1. Weekly

2. Monthly

3. Annually

4. Continuously

5. Rarely


1. Twice a week

2. Every other day

3. Every couple of days

4. Bi-fortnightly

5. Periodically

6. Alternating days

1. Daily

2. Annually

3. Fortnightly

4. Monthly

5. Rarely

Tricks for mastery

Useful tips to understand the difference between confusing words "Bi-weekly", "Semi-weekly".

1. Bi-weekly means every two weeks.

2. Semi-weekly means twice a week.

3. A practical tip for remembering the difference between bi-weekly and semi-weekly is to remember that bi-weekly is a longer time period than semi-weekly.

Check the full list of commonly confused words in English

Learn the difference

Frequently asked questions

In what situations should the first word 'Bi-weekly' be used?

'Bi-weekly' typically refers to something that happens every two weeks, such as a meeting or a pay cycle. For example, a company can have bi-weekly staff meetings or a bi-weekly pay schedule.

When is the appropriate context for using the second word 'Semi-weekly'?

'Semi-weekly' typically refers to something that happens twice a week, such as a delivery service that comes twice a week or a newspaper that publishes twice a week.

Do the two words share the same pronunciation?

No, the two words are pronounced differently. 'Bi-weekly' is pronounced with three syllables, as 'buy-week-lee', whereas 'Semi-weekly' is pronounced with four syllables, as 'semi-week-lee'.

What are some common mistakes people make when using these words?

The most common mistake people make when using these two words is confusing 'Bi-weekly' with 'Semi-weekly'. This is often because the two words look similar and are related to time periods. To avoid this mistake, it’s important to remember that 'Bi-weekly' refers to something that happens every two weeks, while 'Semi-weekly' refers to something that happens twice a week.

Fill in the gaps to check yourself

1. The company pays its employees on a ___ basis.

2. Our team has ___ meetings to discuss project progress.

3. The magazine is published ___.

4. The gardener comes to trim the hedges ___ during the summer months.

5. I started attending yoga classes ___ to improve my flexibility.

6. The newsletter is sent out ___ to all the club members.

1. bi-weekly

Explanation: The company pays its employees on a bi-weekly basis is a common practice where employees are paid every two weeks.

2. semi-weekly

Explanation: If meetings occur to discuss progress, its likely theyre held more frequently, i.e., twice a week, so semi-weekly is the most appropriate choice.

3. bi-weekly

Explanation: Magazines are typically published less frequently than newspapers. So, bi-weekly or every two weeks, is a more likely frequency for a magazine.

4. semi-weekly

Explanation: The phrase during the summer months hints at the hedges growing faster due to the season and therefore might need more frequent maintenance, so semi-weekly or twice a week, is the suitable choice.

5. semi-weekly

Explanation: Attending yoga classes twice a week is a reasonable frequency for someone looking to improve flexibility, so semi-weekly fits best.

6. bi-weekly

Explanation: Newsletters, especially for club members, are typically not sent out too frequently to avoid overwhelming the recipients. Therefore, every two weeks or bi-weekly is a more appropriate frequency.

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List of Commonly Confused Words

Finding your way around the English language can be hard, especially since there are so many confusing words and rules. So, a list of the most confusing words in English is an extremely useful tool for improving language accuracy and sharing the ideas clearly.