IPA: /ˈvɪɡərəsli/
KK: /ˈvɪɡərəsli/
In a way that shows a lot of energy, strength, or enthusiasm.
She exercised vigorously to stay fit and healthy.
Vigorously → It is formed from "vigor" (from Latin "vigor", meaning strength or energy) and the suffix "-ously" (meaning in a manner characterized by). The word "vigorously" means in a manner characterized by strength or energy.
Think of 'vigor' as strength or energy, and remember that 'vigorously' means doing something with a lot of energy.