dubious — doubtful; marked by or occasioning doubt: a dubious reply.
nucleus — a central part about which other parts are grouped or gathered; core: A few faithful friends formed the nucleus of the club.
nutrients — nourishing; providing nourishment or nutriment.
studious — disposed or given to diligent study: a studious boy.
vesuvius — Mount, an active volcano in SW Italy, near Naples. Its eruption destroyed the ancient cities of Pompeii and Herculaneum a.d. 79. About 3900 feet (1190 meters).
Four-or-more syllable rhymes
insouciance — the quality of being insouciant; lack of care or concern; indifference.
lugubrious — mournful, dismal, or gloomy, especially in an affected, exaggerated, or unrelieved manner: lugubrious songs of lost love.
marsupial — any viviparous, nonplacental mammal of the order Marsupialia, comprising the opossums, kangaroos, wombats, and bandicoots, the females of most species having a marsupium containing the mammary glands and serving as a receptacle for the young.
