Added 9 October 2026 onomastically adverb Categories: Obscure Words adverb ! Definition from Wiktionary (CC BY-SA). More about onomastically at Wordnik → Where our words come from → In an onomastic way. Related Words: onomasiologicallyonomatologicallyonomatopoeicallyonomatopoeticallyeponymicallyhyponymicallytoponymicallyphonematicallyonomatopoieticallyhyponymouslyonomatopœicallycognominally Back to today's word