Searight created Sona in response to the other artificial auxiliary languages of his time. According to him, Esperanto was too eurocentric, while more a priori languages like Solresol were unworkable. For this reason, Searight used inspiration from many diverse languages, primarily English and Chinese, to create his ecclectic yet regular and logical language.
Sona is an isolating language. The language has 360 radicals or root words -- based on the terms in Roget's original thesaurus -- plus 15 particles that modify the radicals. Ideas and sentences are built up by joining the radicals and particles. Thus, ra "male" plus ko "child" makes rako "boy".
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