Simple past tense and past participle of single.(verb)
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Use "singled" in a sentence
"But I said: 'Why was my name singled out by the government, at the foreign ministry briefings?'"
"Now the UPSA (United Police States of America) trade representative has again singled out Canada for special attention."
"Palin singled out Murkowski, in particular, as trying to distract voters 'attention by questioning Miller's record and honor to avoid talking about the issues facing the state and nation and the need to change the status quo in Washington."