Simple past tense and past participle of scunner.(verb)
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Use "scunnered" in a sentence
"On a more substantive point, the American public is so scunnered by politics that you can (almost!) make a case for arguing that it's better to be in the minority than the majority in Congress."
"I look at the old country as it was in my youth and as it is today and, to use a fine Scots word, I am scunnered."
"Perhaps, he wonders, some of the core vote has been scunnered by the Lisbon Treaty shenanigans or perhaps some floating voters are concerned by a perceived Tory zeal for cutting public spending and, hence, they feel, services."