cacogeusia (kak oh GYOO see uh) 1. An unpleasant taste in the mouth. 2. A bad taste due to a bad-tasting substance, uncinate epilepsy, or a delusion. 3. A bad taste; a frequent complaint in idiopathic epilepsy, in patients receiving tranquilizer therapy, and in somatic delusional states. Found on http://www.wordinfo.info/words/index/info/view_unit/906/