IPA: /ˈhɔːrəbli/
KK: /ˈhɔrəbli/
In a very bad or unpleasant manner; to a great extent that is negative or undesirable.
The movie was horribly boring, and I couldn't stay awake.
Horribly → It is formed from "horribilis" (from Latin, meaning dreadful or terrifying) and the suffix "-ly" (meaning in a manner of). The word "horribly" means in a manner that is dreadful or terrifying.
Think of something that is 'dreadful' ('horribilis') to remember that 'horribly' means in a dreadful manner.