Unmatched is a related term of fantastical.
As adjectives the difference between unmatched and fantastical
is that unmatched
is (of a pair of things) not matched; odd while fantastical
is of or pertaining to fantasy.
As a verb unmatched
(of a pair of things) not matched; odd
(of a single thing) not matched with anything else
peerless; unrivalled; beyond comparison
* phantastical (dated)
* phantasticall (archaic)
Of or pertaining to fantasy.
fanciful or whimsical