The 7 Cs of effective communication are a checklist to ensure that your communication is clear, concise, concrete, correct, coherent, complete, and courteous. These principles can be applied to all forms of communication, whether its written or spoken, and can help you communicate more effectively. Here is a brief explanation of each of the 7 Cs:

1. Clear: Be clear about the goal of your message and the purpose of the message. Use simple and easy-to-understand language.

2. Concise: Provide short and essential messages in limited words to the audience. Highlight the key points of your message and avoid unnecessary or excessive words or phrases.

3. Concrete: Use specific and tangible language to make your message more vivid and understandable.

4. Correct: Check for the precision and accuracy of facts and figures used in the message. Use appropriate and correct language in the message.

5. Coherent: Ensure that your message makes sense and flows logically. Think carefully about the order of your points and how you can make it come across in an easy-to-understand way.

6. Complete: Ensure that the audience has all the information they need and are able to easily come to the desired conclusion. Provide all the necessary details and avoid leaving out important information.

7. Courteous: Be polite, friendly, professional, open, and honest. Think about your message from the recipient’s point of view and be empathetic towards their needs. This will help you to deliver the message in a way that’s easy to understand and buy into.

By following the 7 Cs of communication, you should find the messages you are delivering much more effective.