It doesn’t look good! (7)

I believe the answer is:

eyesore

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But I can't explain it at all! Could you help me understand?

(Other definitions for eyesore that I've seen before include "Horrible sight" , "Ugly and offensive sight" , "ugly feature" , "It's offensively ugly" , "Something ugly to look at" .)

I've seen this clue in The Hindu.

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