Wiktionary
capablest
a. (context nonstandard English) (en-superlative of: capable)
Usage examples of "capablest".
Joan charmed them every one with her sweetness and simplicity and unconscious eloquence, and all the best and capablest among them recognized that there was an indefinable something about her that testified that she was not made of common clay, that she was built on a grander plan than the mass of mankind, and moved on a loftier plane.