CD9 Meaning

CD9 stands for Code 9.

CD9 is an internet slang abbreviation that is an adult alert.

How Is CD9 Used? Use Cases & Examples

CD9 is most commonly used by children and teenagers. It indicates “adult alert” that young people are engaging in online activities that they wish to hide from their parents or other adults (eg, gaming, engaging in dating-style chat, planning secret activities). CD9 is a warning to other participants in the conversation that they shouldn’t write anything they don’t want adults to see.

Examples of how your teen might use the slang term CD9:

  • What time did you get home last night?
    CD9. How’s your brother?
  • Dude, you were so drunk on Saturday! Do you remember what you said to Cindy?
    CD9. Do you have a copy of the assignment that Mrs. Laws gave us?
  • Next week is 420. Are you ready?
    CD9. Did you see the playoffs last night?
  • Let’s FaceTime.
    CD9 gotta go.

How to Identify If Your Kids Are Using the CD9 Slang Word

You may have stumbled upon this slang term used by your kids when a text pops up on your phone screen. Using the slang term CD9 is a red flag that your kids are engaging in risky activities. You should pay attention to teen slang words to protect them from potential dangers such as predators, drugs, and other negative influences. Here are two ways to identify the CD9 slang word.

1. Check Their Phones Directly for the CD9 Slang Word

Children these days are more creative and innovative than generations ago, especially when it comes to hiding from their parents what they’re really talking about. It’s time to check your kids’ phones. Every cell phone activity should not be missed, especially SMS, search history and chat messages on WhatsApp, Facebook, Skype, Line, etc.


  • Affect your relationship with your kids
  • Troublesome
  • Can’t detect dangers timely


  • No need to install any app

2. Install A Parental Control App to Monitor the CD9 Slang Word

If you install a parental control app on your children’s phones, you will be able to detect risky teenage slang, such as CD9. It lets you check your teens’ search history, chat messages, and text messages for CD9. Besides, it will send alerts to you when the CD9 slang word is detected. As a result, you can take immediate action to protect your children from potential dangers such as drugs, predators, and sexual activity.


  • More features like chat monitoring, GPS tracking, call recording, surrounding recording, etc
  • Instant alerts
  • Easy to install and use


  • Some apps are not free

Parental Control Apps to Detect the CD9 Slang Word


  • Google Family link:
    It is a family parental control service from Google that helps you check search history for the CD9 slang word, restrict content, set screen time, and more.
  • iKeyMonitor:
    iKeyMonitor is one of the most powerful parental control apps. It monitors SMS, chat messages, and searched terms on kids’ phones. It will take screenshots/photos and send instant alerts to you on triggered alert words such as CD9. Besides, it will record calls, surroundings and block inappropriate apps to protect your kids from threats such as sexual predators, drugs, alcohol,etc.


  • Apple Screen Time:
    With Apple’s built-in parental control setting, you can manage app limits, set content restrictions, and more. Just unlock the iPhone or iPad, then go to Settings and tap on Screen Time.
  • Norton Family Parental Control:
    Norton Family provides insights that help you foster a healthy online/offline balance for your children and their devices.
  • Kaspersky Safe Kids with GPS:
    Kaspersky Safe Kids is a popular parental control app that provides web monitoring, app blocking, filtering, and more.
  • Alertbird Parental Control:
    Alertbird is a parental control app for iOS that monitors the CD9 slang term and other dangerous words. You will be notified immediately if it detects alert keywords in your searched terms and chat messages, such as the CD9 slang word.

Tips to Talk With Your Kids About the Use of the CD9 Slang Word

CD9 is one of many slang terms kids use to remind each other when trying to hide online discussions from their parents. If you see this slang term in a teen’s digital conversation, you should investigate further because your teen is talking about something they don’t think you would approve of. It can be as mild as a classmate crush or as terrifying as being groomed by an online predator.

Here are some ideas for talking calmly with your kids about using CD9:

  • Has an online friend you’ve never met asked you to withhold information from your parents?
  • Have you ever used CD9 to end a conversation that made you feel uncomfortable?
  • Did you notice that if this was a CD9 conversation, your plan could have negative consequences?
  • Do you understand that I just want you to stay safe online and don’t want to invade your privacy?

List of Teenage Slang Words