
Blot
Visual Marks
Blot as a noun often refers to a visible blemish caused unintentionally.

Oops, a blot of paint defaced my new wallpaper.
Often Accidental
When using 'blot', it usually implies an accidental spill or spot that's undesirable.

Be careful with the pen, or you'll leave a blot on the document.
Negative Emotion
'Blot' can carry a negative connotation, suggesting annoyance or upset.

He frowned at the blot marring the contract's white page.
Compare with
BlemishFlawMarkSmudgeSpotStainTarnish
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