Wikipedia foundation.
outboast — [spelling only] … English World dictionary
outboast — v.t. * * * … Universalium
outboast — out boast′ v. t … From formal English to slang
outboast — /aʊtˈboʊst/ (say owt bohst) verb (t) to surpass in boasting …
outboast — v.t … Useful english dictionary