IPA: /ˈhɔːrɪblnəs/
KK: /hɔːrɪblnəs/
The quality or state of being very unpleasant or bad.
The horribleness of the situation made everyone feel uncomfortable.
Horribleness → It is formed from "horrible" (from Latin *horribilis*, meaning dreadful or terrifying) and the suffix "-ness" (meaning the state or quality of). The word "horribleness" refers to the state of being horrible or the quality of causing horror.
Think of something that is 'dreadful' ('horrible') and the '-ness' indicating a state. This helps you remember that 'horribleness' means the quality of being dreadful.