Crossword Genius

It isn’t commonly a stain or blemish (5)

Ross

I believe the answer is:

taint

This clue is a triple definition!

'it isn't commonly' is the first definition.
(I've seen this before)

'a stain' is the second definition.
(I've seen this before)

'or' acts as a link.

'blemish' is the third definition.
(I've seen this before)

(Other definitions for taint that I've seen before include "Corrupt" , "(Trace of) corruption" , "Sully, stain" , "Flaw in Titan" , "It isn't commonly" .)

I've seen this clue in The Times.
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