IPA: /bərˈzɜrkli/
KK: /bərˈsɜrkli/
In a wild or frenzied way, often showing extreme anger or excitement.
He ran berserkly through the streets, shouting and waving his arms.
The word 'berserkly' is derived from 'berserk' (from Old Norse 'berserkr', meaning bear shirt, referring to warriors who fought with frenzied rage) and the adverbial suffix '-ly' (meaning in a manner of). Thus, 'berserkly' means in a manner that is frenzied or wildly uncontrolled, akin to the behavior of berserk warriors.
Imagine a warrior wearing a 'bear shirt' ('berserkr') and fighting with wild rage. This helps you remember that 'berserkly' means acting in a wildly uncontrolled manner.
No commonly confused words.