A blot on the landscape
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Meaning
Something that spoils the view or ruins a previously comfortable situation.
Origin
T. E. (Thomas Edward) Lawrence, in 'Letters' (edited D. Garnett), 1938:
"His two Kufti people - will be rather a blot on the landscape."
Tom Sharpe published a novel - 'Blott on the Landscape' in 1975.

