IPA: /nəˈfɛrɪəsli/
KK: /nəˈfɛrɪəsli/
In a way that is wicked or criminal; doing something evil or morally wrong.
The villain nefariously plotted to take over the world.
Nefariously → It is formed from "nefarious" (from Latin *nefarious*, meaning wicked or villainous) and the suffix "-ly" (meaning in a manner of). The word "nefariously" means in a wicked or villainous manner.
Think of the word 'nefarious' which means wicked, and remember that 'nefariously' describes doing something in a wicked way.