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fantabulous

[fan-tab-yuh-luh s]
adjective Slang.
  1. extremely fine or desirable; excellent; wonderful.
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Origin of fantabulous

1955–60; blend of fantastic and fabulous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for fantabulous

adj.

1959, creative merger of fantastic and fabulous.

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Online Etymology Dictionary, © 2010 Douglas Harper