.. at least according to ‘The Economist’.

And though it is sometimes necessary to use nouns as adjectives, there is no need to call an attempted coup a coup attempt, a suspected terrorist a terrorist suspect or the Californian legislature the California legislature. Vilest of all is the habit of throwing together several nouns into one ghastly adjectival reticule: Texas millionaire real-estate developer and failed thrift entrepreneur Hiram Turnipseed…

[ Source : The Economist via Kottke ]