You can however have email handles such as "pediphile" and a long list of other smarmy possibilities to choose from.
He exclaims: "why are they banning allah but allowing god, jesus, and mohammad?
One can only wonder who makes these decisions and apparently Yahoo isn't talking. If I were muslim I could develop an insecurity complex.
Before attempting to register a Yahoo account, save yourself the hassle and get a heads up on other words that are banned.