Kenneth G. Wilson (1923–). The Columbia Guide to Standard American English. 1993.
something else, really something
These two idioms involving something are slang locutions found only at the Conversational levels and in Informal imitations of them. She’s something else! means “She’s absolutely extraordinary, remarkably different.” And She’s really something has much the same meaning, although perhaps a shade less hyperbolic: “Far from being uninteresting and unremarkable, she’s truly a person to be taken into account.”
