An adjective given to describe something that is both fantastic and fabulous, but with a Spanish twist to it so the speaker sounds smarter than he or she actually is. It is said with a rhythm to it i.e. fantabu-lo-so, or with a posh accent i.e. fantabuloso, dahling.

Alternatively, it can be used as a pun to describe the taste of a common fizzy drink.
"Scrubs was fantabuloso last night, did you see the bit when she slapped him?"

"Mm-mmm, those bubbles of carbon dioxide are just fantabuloso in my mouth!"
by fayonnaise October 28, 2005
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The day on that yacht , the weather was fine ,the food amazing and the company was just fantabuloso
by pixie feet June 14, 2017
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