IPA: /əˈblɪviəsnəs/
KK: /əˈblɪviəsnəs/
The state of not being aware of or concerned about what is happening around you.
Her obliviousness to the noise around her made it easy for her to concentrate on her work.
Obliviousness → It is formed from "obliviosus" (from Latin, meaning forgetful) and the suffix "-ness" (meaning the state of being). The word "obliviousness" refers to the state of being forgetful or unaware.
Think of being 'forgetful' ('obliviosus') and how that leads to a state of not noticing things — that's what obliviousness means.