controvertible

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The Word of the Day for January 28 is: 

controvertible   \KAHN-truh-ver-tuh-bul\   adjective
     : capable of being disputed or opposed by reason

Example sentence:
     You cannot justify your actions with such controvertible evidence.

Did you know?
     If you're familiar with "incontrovertible," you may have wondered about 
the existence of "controvertible." Both words are direct descendants of 
"controvert" ("to dispute or oppose by reasoning"), which dates back to 1584 in 
English and itself derives from "controversy." "Controvertible" was documented 
in print as early as 1614, and "incontrovertible" (which, as you might suspect, 
was formed by adding the negative prefix "in-") turned up around thirty years 
later. "Controversy" comes to us (through Anglo-French) from the Latin 
"controversus," meaning "disputable," and can ultimately be traced back to the 
Latin "contro-" ("against") and "versus," the past participle of "vertere" ("to 
turn").