10 Synonyms for “Did You Know”

Are you trying to find a better way to say “did you know”? It’s a decent way to start a sentence, but it might be worth learning how to rephrase it, so you can mix up your writing.

Luckily, we’re here to help! We’ve gathered all the synonyms you need to spice up your writing both formally and informally.

“Did You Know” Synonyms

  • Have you heard
  • Didn’t anyone mention
  • Haven’t you heard
  • Did nobody tell you
  • Didn’t somebody say
  • Were you told
  • Did someone make you aware
  • Are you wise to
  • Do you know
  • Are you aware


  • “Did you know” works well to introduce someone to an idea, whether they knew about it or not.
  • “Have you heard” is a good formal synonym to find out whether someone knows something.
  • You can say “didn’t anyone mention” if you want to sound more conversational.

Of course, there’s more to learn! So, read on to find out about the best synonyms for “did you know.” We’ve explained the best formal and informal options to help you.

Also, the final section will explain whether “did you know” is correct. Skip ahead if you’d like to learn whether it’s acceptable and polite to include.

Have You Heard (Formal)

“Have you heard” shows you how to rephrase “did you know” formally. It’s a great option because it finds out whether someone has learned (or heard) information elsewhere before you give it to them.

It’s a respectful way to ask if someone knows something. Then, you can provide the information to see what they know. “Did you know” might seem a bit ruder as it does not assume that someone knows the information.

For instance:

Have you heard about the new rules?

Did you know about the new rules?

Generally, you can use it when asking an employee if they’re up to date with new changes. It shows that you would like them to keep on top of things without sounding too demanding.

“Have you heard” is more professional and polite. You can use either phrase formally, but “have you heard” certainly makes more sense when you’re trying to be respectful over an email.

These examples will help you understand it:

Dear Roger,

Have you heard about the changes yet? I included a detailed document in case you haven’t come across them.

All the best,

Have you heard that the project didn’t align with the goals set? We have to do the whole thing again.

Didn’t Anyone Mention (Informal)

“Didn’t anyone mention” is a good example of how to say “did you know” without “you” in the phrase. It’s a more informal phrase showing that you’re surprised someone did not learn about something.

Starting the phrase with “didn’t” makes it more negative. It suggests that you’re surprised someone doesn’t have the information you share.

You may want to use it when talking to friends about new ideas. It shows you thought they would be on the same page but are surprised to learn that someone hasn’t “mentioned” something to them.

While “didn’t anyone mention” shows you what to say instead of “did you know,” it’s not a good formal option. You should stick with “did you know” when you want to be professional. “Didn’t anyone mention” is more effective conversationally.

You can also refer to these examples to help you:

Didn’t anyone mention that we don’t do things like that anymore? I thought you would have known.

Didn’t anyone mention the conversation to you? It was quite an important thing when it happened!

Is It Correct to Say “Did You Know”?

“Did you know” is correct to say. You can start a question with “did you know” when you want to find out whether someone knew something you did. It often comes before an interesting fact or update.

Here are some examples showing you how it works:

  • Did you know that he changed his mind?
  • Did you know ostriches can’t fly?

As you can see, “did you know” always starts a question. You should end the sentence with a question mark to highlight this.

Also, “did you know” questions are not rhetorical questions. Generally, they call for a “yes” or “no” answer to see whether you knew the information before someone stated it.

Finally, you can use either of the following:

  • Did you know
  • Do you know

Did” is the past tense. It asks whether you knew about something before someone mentioned it.

Do” is the present tense. It instead checks to see if you currently know something or are only just finding out about it.

Of course, you should bookmark this page to remind yourself of the best terms for another way to say “did you know.” Then, you’ll have plenty of options to mix up your writing when you need to.