Fanciful a. : Full of fancy; guided by fancy, rather than by reason and experience; whimsical; as, a fanciful man forms visionary projects.

Fanciful a. : Conceived in the fancy; not consistent with facts or reason; abounding in ideal qualities or figures; as, a fanciful scheme; a fanciful theory.

Fanciful a. : Curiously shaped or constructed; as, she wore a fanciful headdress.

Example:
What could be a somewhat Fanciful name for the secondary color which results from red and yellow?

Taxonomy
Merriam-Webster Online Dictionary, ful, Dictionary, webster, Word Games, Webster Online Dictionary with audio pronunciations, thesaurus, Google Search, Custom Search, glossary, english, language, ESL, Search, adjective, imagination, notion, whim.

Defination from the web:
fanciful from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... 1 : marked by fancy or unrestrained imagination rather than by reason and experience <a fanciful person> 2 : existing in fancy only <a fanciful notion> ...