Origin: Germanic Old English suffix
Oneness has 2 different meanings across 1 category:
Noun
the quality of being united into one
"The meditation session ended when everyone felt a profound sense of oneness, as if their separate thoughts had merged into a single collective awareness."
State of being one or undivided; unity.
"The meditators sat in silent oneness, feeling their individual worries dissolve into a single shared peace."