From Wiktionary, the free dictionary
From πΏπ½- (un-, βun-β) + π°π½π°ππΉπΏπ½π (anasiuns, βvisibleβ) + -π±π° (-ba, βadverb-forming suffixβ).
πΏπ½π°π½π°ππΉπΏπ½πΉπ±π° β’ (unanasiuniba)
- invisibly