Siân:
(Is phlegmy a word?) If it is it would be good for Scrabble players....

Quick run downstairs, check "Official Scrabble Words" (2nd edition)

... Yep, it's in there, so I feel confident it's a valid word, though I would not wish to appear too phlegmatic on the matter.

If anyone has a contrary opinion, come on, spit it out!

CHEERS
Nigel