Definitions

1. noun

A person who spreads or promotes something, especially a false or malicious idea, to others.

“The rumor spread like wildfire, and soon everyone knew about the pervader who started it.”

2. noun

A person or thing that invades or spreads into a place or system, often in an unwanted or harmful way.

“The software update was a pervader of the company’s computer system, causing many issues for the employees.”