confusaˈbilityrare. [f. next + -ity.] Capability or liability of being confused. 1844–71N. Brit.Rev. (in Ogilvie).1864in Webster.1958Goodglass & Hunt in Saporta & Bastian Psycholinguistics (1961) 452/2 The subjects' tendency to make random errors due to confusability or to a fluctuating level of comprehension.