What Does CMH Mean?

CMH means "Cross My Heart." The abbreviation CMH, which is a shortened version of CMHAHTD (Cross My Heart And Hope To Die), is an idiom to emphasize that what you've just said or promised is completely true and honest. It is commonly used by children wishing to communicate they are telling the truth; adults will use it informally for the same reason.

With origins in folklore, it most likely began as a religious oath based on the sign of the cross. In a face-to-face conversation, CMH is often accompanied by a hand gesture, drawing a cross over the heart.

Also of note, "Cross my Heart" was a track on the 1992 album "The Human Touch" by Bruce Springstein.

Image for CMH

When I write CMH, I mean this:

meaning of CMH

CMH describes a childhood action used to accentuate that you are telling the truth.

Summary of Key Points

"Cross My Heart" is the most common definition for CMH on Snapchat, WhatsApp, Facebook, Twitter, Instagram, and TikTok.
Definition:Cross My Heart
Guessability:guessability level 4
4: Difficult to guess
Typical Users:typical user

Adults and Teenagers

Examples of CMH in Sentences

Here are examples of CMH being used in conversations:
  • Sammy: If I tell you something, do you promise not to repeat it?
  • Carol: I can totally keep secrets. It's the people I tell them to that can't. Only joking! CMH.
  • Sammy: Did you tell them about what I did?
  • Carol: It wasn't me CMH.

An Academic Look at CMH

CMH is an initialism abbreviation. Technically, this means it is pronounced using its individual letters (i.e., Cee Em Aich), but as this is harder to say than "Cross my heart," it is not often uttered using its letters. In other words, the abbreviation CMH is for efficiency in writing and not efficiency in speech.

CMH is used as a standalone declarative sentence (i.e., a statement). In other words, it is not used as another part of speech within a wider sentence.

What Did We Say before Texting and Social Media?

Before the digital era, we might have said something like "cross my heart and hope to die" or "I promise I'm telling the truth" instead of CMH. -->

Example of CMH Used in a Text


Help Us Improve Cyber Definitions

  • Do you disagree with something on this page?
  • Did you spot a typo?
  • Do you know a slang term that we've missed?
Please tell us using this form.


Try our fun quiz to test your knowledge of slang and texting abbreviations.
gold cup

gold cup

gold cup

  • This test has questions.
  • A correct answer is worth 5 points.
  • You can get up to 5 bonus points for a speedy answer.
  • Some questions demand more than one answer. You must get every part right.
  • Beware! Wrong answers score 0 points.
  • 🏆 If you beat one of the top 3 scores, you will be invited to apply for the Hall of Fame.
Scoring System

Cyber Guru (+)
Cyber Hero (+)
Cyber Captain (+)
Cyber Sergeant (+)
Cyber Recruit (+)