IPA: /məˈlɪʃəsli/
KK: /məˈlɪʃəsli/
In a way that is intended to cause harm or suffering to someone.
He maliciously spread rumors about his colleague to damage her reputation.
Maliciously → It is formed from "malicious" (from Latin "malitiosus", meaning full of malice or ill will) and the suffix "-ly" (meaning in a manner of). The word "maliciously" means in a manner that is full of malice or intended to cause harm.
Think of someone acting in a way that is full of ill will ('malicious') — and the '-ly' just means how they are acting. So, when someone acts maliciously, they are behaving in a harmful way.