A most unfair condition (8)

I believe the answer is:

ugliness

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'a most unfair condition' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.

This is all the clue.

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(Other definitions for ugliness that I've seen before include "Unattractiveness" , "threatening behaviour" , "Complete lack of beauty" , "Repulsive appearance" , "Unsightly quality" .)

I've seen this clue in The Globe and Mail and The Telegraph.

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