pure
pure and simple and nothing else.
1991Alabama Game & Fish They are bred for waterfowling, pure and simple.
pure as the driven snow completely pure.
☞ When used of snow, driven means that it has been piled into drifts or made smooth by the wind. The phrase was famously parodied by the actress Tallulah Bankhead in 1947: 'I'm as pure as the driven slush'.
the real Simon Pure: seeSimon Pure.