IPA: //ˈnɔː.ʒəs.nəs//
KK: /ˈnɔːʒəsnəs/
The condition of feeling sick to the stomach, often leading to a desire to vomit.
After the roller coaster ride, I experienced a strong sense of nauseousness.
Nauseousness → It is formed from "nauseous" (from Latin "nauseosus", meaning causing nausea) and the suffix "-ness" (meaning the state or quality of). The word "nauseousness" refers to the state of being nauseous or the quality of causing nausea.
Think of the word 'nauseous' which means causing discomfort in the stomach, and remember that 'nauseousness' describes the state of feeling that discomfort.