We don't have synonyms for orcadians yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are Arcadian, orcadian and arcadians.
(N) :
Orcadians, also known as Orkneymen, are an ethnic group native to the Orkney Islands, who speak an Orcadian dialect of the Scots language, a West Germanic language, and share a common history, culture and ancestry.
(N) :
Orcadians, also known as Orkneymen, are an ethnic group native to the Orkney Islands, who speak an Orcadian dialect of the Scots language, a West Germanic language, and share a common history, culture and ancestry.