the adverb 'spuriously' is built upon the adjective 'spurious', which entered english in the late 16th century directly from latin spurius. the latin term originally carried the specific meaning of 'illegitimate' in reference to birth, a sense that broadened to denote anything false or not genuine. the root spurius is of uncertain origin but may be etruscan. the suffix '-ous' attaches to this root to form the adjective, and the old english adverbial suffix '-ly' is then added, completing a logical morphological chain from a root meaning 'false' to a modern adverb describing actions done in a deceptive or inauthentic manner.

Structure: spuri (false) + ous (adjective suffix) + ly (adverb suffix) - spuri: from latin spurius, meaning 'false, illegitimate'. functions as the core root conveying the sense of falseness. - ous: a suffix of latin origin used to form adjectives meaning 'having the quality of'. - ly: a suffix of old english origin used to form adverbs from adjectives.