Formerly or Formally | Meaning, Difference, and Correct Usage in 2026

Have you ever written a sentence and paused because you could not decide between formerly or formally? These words look and sound close, but they have very different meanings. One talks about something that was true in the past, while the other describes the proper, official, or serious way something is done. This small difference can change the meaning of a sentence, especially in emails, applications, news writing, and professional documents.
Many people search formerly or formally because both words are spelled correctly, making the choice harder than a simple spelling check. The good news is that the difference is easy to understand once you know what each word means. This guide explains their meanings, origins, correct usage, common mistakes, and simple examples so you can choose the right word with confidence.

Quick Answer

Formerly means something was true in the past but is not true now. Formally means in an official, proper, or serious manner. For example, “She was formerly the manager” means she used to be the manager. “She formally accepted the offer” means she officially accepted it. Both words are correct, but they cannot usually replace each other.

The Origin of Formerly or Formally

The two words come from different English roots, which helps explain their different meanings.

Formerly comes from former, meaning previous or belonging to an earlier time. The word is linked to the idea of something that existed before. When you say someone was formerly a teacher, you mean that person was a teacher in the past.

The word formally comes from formal, which relates to form, official rules, accepted manners, or a serious style. It describes how an action happens rather than when something happened.

Both words use the suffix -ly, which often turns an adjective into an adverb. The important difference is in their base words:

former → formerly

formal → formally

This is why they look so similar while carrying very different meanings.

British English vs American English Spelling

There is no British-versus-American spelling difference between formerly and formally. Both forms are spelled the same in British English, American English, and standard international English.

Word	British English	American English	Meaning	Example
Formerly	formerly	formerly	Previously or in the past	He was formerly the director.
Formally	formally	formally	Officially or in a proper manner	She formally accepted the invitation.

So, unlike words such as colour/color or centre/center, you do not need to choose a regional spelling here. The real issue is meaning and context.

Why Is There Confusion Between Formerly or Formally?

The main reason is that formerly and formally are visually and phonetically close. Both contain the letters form, both end in -ly, and they can sound similar when spoken quickly.

Typing mistakes also play a role. A person may know the correct word but type the other one because the two words are stored close together in memory.

Autocorrect can make the problem worse. Since both are real English words, a spelling checker may not flag the wrong choice. If you write “He formally worked here,” the sentence contains a correctly spelled word, even though formerly is probably what you intended.

Search behavior also creates confusion. People often type both words into a search engine when they remember the sound but are unsure of the meaning. This is especially common among English learners and writers who use the words only occasionally.

The easiest solution is to ask yourself one question: Am I talking about the past, or am I talking about an official or proper action?

If you mean the past, choose formerly.

If you mean officially or properly, choose formally.

Which Spelling Should You Use?

Your choice does not depend on whether you are writing for a British or American audience. Instead, choose the word based on your intended meaning.

Use formerly when describing a past position, name, identity, role, or situation.

The building was formerly a hospital.
She was formerly known as Anna Smith.
He formerly worked for the company.

Use formally when describing an official action, serious manner, or accepted procedure.

The company formally announced the change.
He formally introduced the new director.
She was formally invited to the ceremony.

For professional writing, take extra care because confusing these words can make a sentence sound awkward or change its meaning. In casual writing, readers may understand your intention from context, but using the correct word is still the better choice.

A useful memory trick is simple:

Formerly = former = past

Formally = formal = official or proper

Common Mistakes with Formerly or Formally

One common mistake is using formally when the sentence is about something that happened in the past.

Incorrect: He was formally the owner of the store.

Correct: He was formerly the owner of the store.

Here, the writer means he used to own the store.

Another mistake is using formerly when the meaning is official.

Incorrect: The company formerly announced its new policy.

Correct: The company formally announced its new policy.

Here, the company made an official announcement.

A third mistake happens with names.

Correct: The restaurant was formerly known as The Green House.

Correct: The restaurant was formally opened by the mayor.

The first sentence refers to an old name. The second describes an official opening.

Remember that a spell checker may not catch these mistakes because formerly and formally are both legitimate words.

Formerly or Formally in Everyday Examples

The difference becomes much easier when you see the words in natural situations.

In Emails

Formerly:
I worked there formerly, before moving to another department.

Formally:
Please formally confirm your attendance by Friday.

The first sentence refers to an earlier situation. The second refers to an official confirmation.

In News Articles

Formerly:
The building, formerly a railway station, will become a museum.

Formally:
The minister formally opened the new facility on Monday.

News writing often uses both words, but their meanings remain completely separate.

In Social Media

Formerly:
This account was formerly called Travel Daily.

Formally:
We are formally announcing our new project today.

In Professional Writing

Formerly:
Mr. Khan was formerly the head of the department.

Formally:
The board formally approved the proposal.

These examples show why replacing one word with the other can create an entirely different message.

Search Intent and Usage Behavior

People searching formerly or formally usually have one of three needs. They may want to know which word is correct, understand the difference in meaning, or check a sentence before publishing it.

The search can also come from a pronunciation-based problem. Because the words are close in sound, a writer may remember the pronunciation but not the spelling or meaning.

Another common search intent comes from editing. Someone may see a sentence such as “He was formally the president” and wonder whether the writer means he used to be president or that he held the position in an official way.

Regional spelling is not the main issue here. Both words are standard in British and American English. Instead, search behavior is driven by meaning, context, pronunciation, and word choice.

This makes the topic useful for learners, students, office workers, bloggers, journalists, and anyone who wants clearer English.

Comparison Table – Formerly vs Formally

Word	Meaning	Correct or Incorrect	Common Context
Formerly	Previously; in the past	Correct when discussing the past	Former jobs, names, roles, places
Formally	Officially; properly; in a serious manner	Correct when discussing official action or manner	Meetings, announcements, ceremonies
Formerly	Officially	Incorrect	Use formally instead
Formally	Previously	Usually incorrect	Use formerly instead

A quick comparison makes the difference clear:

Formerly = before now

Formally = in an official or proper way

FAQs

What is the difference between formerly and formally?

Formerly means previously or in the past. Formally means officially, properly, or in a serious manner. For example, “She was formerly a teacher” describes her past job, while “She formally accepted the job” describes an official action.

Is formerly the same as previously?

Yes. Formerly and previously can often have the same meaning when talking about something that happened or existed in the past. For example, “He was formerly the manager” and “He was previously the manager” both explain that he held the position earlier.

Is formally the same as officially?

Often, yes. Formally can mean officially, especially when describing an announcement, decision, invitation, or agreement. For example, “The company formally announced the change” means the company made the announcement in an official way.

Can formerly and formally be used interchangeably?

No. Although they look and sound similar, they have different meanings. Formerly refers to the past, while formally refers to an official, proper, or serious manner. Replacing one with the other can make your sentence confusing or change its intended meaning.

Which is correct: formerly known as or formally known as?

The correct phrase is usually formerly known as when you mean that something had a different name in the past. For example, “The company was formerly known as Bright Tech.” The word formerly tells readers about its previous name.

Which is correct: formerly announced or formally announced?

Formally announced is normally correct when you mean an official announcement. For example, “The organization formally announced its new policy.” Formerly announced would suggest that the announcement happened previously, which is a different idea.

How can I remember formerly vs formally?

Use a simple memory trick: formerly contains the idea of former, which means past. Formally comes from formal, which means official or proper. If you are talking about something that happened before, use formerly. If it is official, use formally.

Are formerly and formally spelled the same in British and American English?

Yes. There is no British-American spelling difference between these two words. Formerly is spelled the same in both varieties, and formally is also spelled the same. The important difference is their meaning and the context in which each word is used.

Conclusion

Choosing between formerly or formally becomes easy once you focus on meaning instead of spelling. Formerly describes something from the past, such as a previous job, name, position, or situation. Formally describes something official, proper, or serious, such as an announcement, agreement, invitation, or ceremony.
Both words are correct in British and American English, so regional spelling is not the problem. The real challenge is knowing what your sentence is trying to say. Remember the simple rule: formerly = in the past, while formally = officially or properly. Keep this distinction in mind, and you will be able to use both words naturally and accurately in everyday and professional .