The spelling of the word "most robustious" may seem intimidating, but it follows standard English phonetics. The first syllable "ro" is pronounced like "row", while the second syllable "bus" rhymes with "fuss". The following "ti" is pronounced like "sh" (as in "nation"), and the final "ous" is pronounced like "us" (as in "onus"). Altogether, the word is pronounced as /moʊst rəˈbʌʃəs/, meaning highly energetic or boisterous. With practice, mastering the spelling and pronunciation of intricate words like this can enhance one's language skills.
The word robustious is derived from the word robust, which originated from the Latin word robustus. Robustus means strong or powerful and can be traced back to the Latin verb robur, meaning oak tree. The association with oak tree comes from the fact that oak wood was considered very strong and durable in Ancient Rome. The word most serves as an intensifier that emphasizes the strength and power further, creating the phrase most robustious.