If you have a temperature of 101 F (38.3 C) or higher for more than three weeks and your doctor isn't able to find the cause after extensive evaluation, the diagnosis may be fever of unknown origin.

CNN: Fever

So if Wilde so detested Fashion (with a capital F), why is he famously linked with dandyism?

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The danger for Lockheed Martin is that if orders start to tumble, the F-35 could go into a death spiral.

ECONOMIST: The defence industry

This gets reported on a Schedule C, C-EZ, or F, even if you do not have any business expenses.

FORBES: Taxes From A To Z (2013): M Is For Miscellaneous Income

If I were a professor grading this paper I would give it an F and tell them to do it again.

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Pakistan are now level on points with New Zealand and Sri Lanka at the top of Group F and, depending on other results, they could seal a last-four spot if they beat Ireland at The Oval on Monday.

BBC: Gul heroics inspire Pakistan win

If we tack on Y, Z, D, E, and a little F, then our potential customer pool just exploded.

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