The Collaborative International Dictionary
Controversal
Controversal \Con`tro*ver"sal\, a.
-
Turning or looking opposite ways. [Obs.]
The temple of Janus, with his two controversal faces.
--Milton. Controversial. [Obs.]
--Boyle.
Douglas Harper's Etymology Dictionary
controversal
1610s, from Latin controversus "turned against" (see controversy) + -al (1).
Wiktionary
controversal
a. 1 (context obsolete rare English) Facing opposite directions. 2 (context obsolete English) Subject to controversy; controversial.