Fantabulous definition

făn-tăbyə-ləs

Marvelously excellent.

adjective

7

1

(slang) Remarkably good.

adjective

5

3

(slang, intentionally incorrect) Fantastic, fabulous, excellent.

adjective

0

0

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Origin of fantabulous

Blend of fantastic fabulous

From American Heritage Dictionary of the English Language, 5th Edition
Blend of fantastic and fabulous

From Wiktionary