IPA: /ˈkræk.lɪŋ.li/
KK: /ˈkræk.lɪŋ.li/
In a way that produces a series of sharp, snapping sounds, often like the sound of something burning or breaking.
The fire crackled cracklingly as the logs burned.
Cracklingly → It is formed from "crackle" (from Middle English *craklen*, meaning to make a series of short, sharp noises) and the suffix "-ly" (meaning in a manner). The word "cracklingly" describes the manner in which something makes a series of sharp, snapping sounds.
Think of the word 'crackle' which means to make sharp noises, and remember that 'cracklingly' describes doing something in a way that produces those sharp sounds.