Crossword Genius

Unacceptable (3,2)

Ross

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5

3,2

not on

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unacceptable</span>' is the definition.<br/ ><span class="explanation-format__explanation">(something 'not on' is unacceptable or frowned upon)</span><br/ ><br/ >This is the entire clue.<br/ ></span>

(Other definitions for not on that I've seen before include "Unacceptable (colloq.)" , "Definitely inadvisable" , "Informally, cannot be permitted or tolerated" , "Impractical" , "Modern usage for unacceptable" .)

I've seen this clue in The Telegraph, The Guardian, the Sydney Morning Herald, the USA Today and The Times.
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