IPA: /ˈwɪrdli/
KK: /wɪrdli/
In a strange or unusual way.
She danced weirdly at the party, making everyone laugh.
Weirdly → It is formed from "weird" (from Old English *wyrd*, meaning fate or destiny) and "-ly" (a suffix meaning in a manner of). The word "weirdly" means in a manner that is strange or unusual, often relating to fate or destiny.
Think of 'weird' as relating to 'fate' or 'destiny' — when something happens 'weirdly', it occurs in a strange manner, as if influenced by fate.