From formal English to slang. 2014.
Outfool — Out*fool , v. t. To exceed in folly. [R.] Young. [1913 Webster] … The Collaborative International Dictionary of English
outfool — v.t. * * * … Universalium
outfool — verb a) to be more foolish than. b) to outwit … Wiktionary
outfool — v.t … Useful english dictionary