Misfortune, having one pound not readily converted into cash (8)

I believe the answer is:

illiquid

'not readily converted into cash' is the definition.

'misfortune having one pound' is the wordplay.
'misfortune' becomes 'ill' (ill is a kind of misfortune).
'having' is a charade indicator (letters next to each other).
'one' becomes 'i' (Roman numeral).
'pound' becomes 'quid' (UK slang for a pound).
'ill'+'i'+'quid'='ILLIQUID'

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