The Collaborative International Dictionary
Contestable \Con*test"a*ble\, a. [Cf. F. contestable.] Capable of being contested; debatable.
Wiktionary
a. That which can be contested.
WordNet
adj. capable of being contested [ant: incontestable]
Usage examples of "contestable".
I shall presently show, that even the least contestable of the differences which now exist, are such as may very well have been produced merely by circumstances, without any difference of natural capacity.
Can we change the nature of what is contestable, and make it incontestable?
The legalities of simple slave claim, based on active proprietorship, had not superseded, with respect to that collar, the rights contestable by the sword under which I had hitherto been held, those of sword claim.
Within a week, however, Evolutionist candidates for nine of the remaining contestable seats had withdrawn and urged their supporters to vote for New Republican candidates.