Propagator (noun)

A person or thing that promotes or spreads something, especially an idea or belief.

Origin:

Derived from the verb 'propagate', which comes from the latin word 'propagare', meaning 'to produce'.

Examples:

1. The propagator worked tirelessly to spread the word about the benefits of the new product.
2. He was a passionate propagator of the importance of exercise and healthy eating.
3. The propagators of the new movement hoped to inspire a wave of change across the country.
4. The propagator used social media to reach a wider audience and share their message.
5. She became an influential propagator of her beliefs through her speeches and writings.