incontrovertible

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The Word of the Day for March 13 is: 

incontrovertible   \in-kahn-truh-VER-tuh-bul\   adjective
     : not open to question : indisputable

Example sentence:
     The manager presented the clerk's time card as 
incontrovertible evidence that the employee had been late for 
work all five days the previous week.

Did you know?
     If something is indisputable, it's incontrovertible. But 
if it is open to question, is it "controvertible"? It sure is. 
The antonyms "controvertible" and "incontrovertible" are both 
derivatives of the verb "controvert" (meaning "to dispute or 
oppose by reasoning"), which is itself a spin-off 
of "controversy." And what is the source of all of these 
controversial terms? The Latin adjective "controversus," which 
literally means "turned against."