The word "bilinguous" is often misspelled as "bilingual". However, the correct spelling of the word is "bilinguous" (/baɪˈlɪŋɡwəs/). The "uo" in "bilinguous" represents the two different vowel sounds in the word "bilingual" (/baɪˈlɪŋɡwəl/), which is why the spelling was changed to better represent the phonetic pronunciation. Being bilinguous means having the ability to speak two languages fluently. It is an important skill in today's globalized world, and can open up many opportunities for personal and professional growth.
Speaking two languages.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.