adjective.Controversial. Not fully proved, open to debate, sometimes used humorously.
adjective.
Of a person, argumentative.
adjective.
A fitting subject for debate.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
open to argument or debate
adjective.
capable of being disproved
adjective.
open to doubt or debate
Word Usage
"Here we have a court ruling relying on a debatable interpretation of the Canadian Environmental Assessment Act. The reason I say "debatable" is that for two other different cases the court has interpreted the same article in exactly the opposite sense."