When someone says, “I won’t tell a soul“, they are promising that they will not share your secret with anyone else. It’s a way of assuring someone that the information they’ve shared will be kept confidential.
Here are two examples in sentences:
Example 1:
Sarah told her friend about her secret crush and her friend assured her, “Don’t worry, Sarah. I won’t tell a soul.”
Example 2:
When Mike’s coworker shared some confidential information about the company, Mike responded, “Your secret is safe with me. I won’t tell a soul.”
Now, let’s see two examples in a conversation:
Example 3:
Emma: Hi, Tom! I need to tell you something, but you have to promise not to share it with anyone.
Tom: Of course, Emma. I won’t tell a soul.
Example 4:
Lucy: Hey, John! I overheard something today, but you can’t tell anyone else.
John: I understand, Lucy. I won’t tell a soul.
So, when someone says “I won’t tell a soul“, they’re promising to keep the information they’ve received secret. It’s a way of assuring someone that they can be trusted with sensitive information.