IPA: /prəˈlɪfɪkli/
KK: /prəˈlɪfɪkli/
In a way that produces a lot of something, especially in large quantities or with great creativity.
The author wrote prolifically, publishing several books each year.
Prolifically → It is formed from "prolific" (from Latin "prolificus", meaning fruitful or productive) and the suffix "-ly" (meaning in a manner of). The word "prolifically" means in a manner that is fruitful or productive.
Think of being 'fruitful' ('prolific') and doing it 'in a manner' ('-ly') — that's why prolifically means doing something in a productive way.