Lusom or Lusomsva in it's Mothertongue, the speakers are called An Deucalionis - The Cultured Ones, is a language that has been in the works for two years now. It is most comparable to that of Novial. In a sense, it could be described as a Sister Language to English, with more of a Germanic/Nordic and Romance twist to it. This is not an IAL though.
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