cackle

"cackling is a specific type of laugh that is sharper and more pronounced, often associated with a sense of schadenfreude, sarcasm, or the stereotypical portrayal of witches. Unlike the generally positive or neutral connotations of laughing, cackling might be perceived as unsettling or annoying due to its piercing quality and the contexts in which it is typically used."

https://www.askdifference.com/laugh-vs-cackle/

cackle