1.Definition: having a curiously intricate quality

"A fanciful pattern with intertwined vines and flowers"

2.Definition: indulging in or influenced by fancy

"A fanciful mind"

Related Adjective(s):notional

3.Definition: not based on fact; existing only in the imagination

"The falsehood about some fanciful secret treaties"

Related Adjective(s):imaginary, notional