IPA: /həˈrɪfɪkli/
KK: /hɔːˈrɪfɪkli/
In a way that causes horror or shock; extremely unpleasant or frightening.
The movie was horrifically scary, making everyone jump in their seats.
Horrifically → It is formed from "horrific" (from Latin "horrificus", meaning causing horror) and the suffix "-ly" (meaning in a manner of). The word "horrifically" means in a manner that causes horror or is extremely shocking.
Think of something that causes 'horror' ('horrific') and remember that 'horrifically' means doing something in a way that is shocking or terrifying.