the GNU version of the Collaborative International Dictionary of English
adj. Liable to be mistaken; capable of being misconceived.
The Century Dictionary and Cyclopedia
That may be mistaken; liable to be misunderstood.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. so similar as to be easily identified for another thing
Word Usage
"The Clintons must be made to understand in no mistakable terms that this country does not belong to them, and indeed, the democratic party does not belong to them."