1. done without conscious purpose or by accident; not deliberate

Examples

• The damage to the car was completely unintentional.
• She made an unintentional error in her calculations.
• His rude comment was unintentional and he quickly apologized.
• The comedian’s unintentional slip of the tongue got the biggest laugh.
• The unintentional leak of information caused a security breach.
• Her unintentional yawn during the meeting was embarrassing.