What. What would we do without “what”? From Middle English and Indo-European. And Latin. And even Lithuanian. So says Trusty Webster. What’s new, Pussycat? What’s up, Doc? What’s it all about, Alfie? What’s the problem? What’s happening? Que passa? What’s done is done. What’s a mother to do? What would Jesus do? What do you mean? What do you say? Please. And thank you. What difference does it make? What do you know? What do you think ...