not have a clue
Have no idea or inkling about something, as in Jane doesn't have a clue as to why John won't call her, or Do you know what's wrong with the boiler?—No, I haven't a clue. This usage was first recorded in 1928.
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ROME — What does it take for a Hollywood A-lister to get a private audience with Pope Francis?Pope Francis Has the Pleasure of Meeting Angelina Jolie for a Few Seconds|Barbie Latza Nadeau|January 8, 2015|DAILY BEAST
Yes, Byrd—dead four-and-a-half years now—was a Kleagle in the Ku Klux Klan.Steve Scalise and the Right’s Ridiculous Racial Blame Game|Michael Tomasky|January 2, 2015|DAILY BEAST
By the time it concluded with a sing-a-long of “XO,” Beyoncé had done the rare thing.Bow Down, Bitches: How Beyoncé Turned an Elevator Brawl Into a Perfect Year|Kevin Fallon|December 31, 2014|DAILY BEAST
In another year, stories about the strange new face of an A-list actress might draw chortles and cackles.Renée Zellweger Got a New Face—and Everyone Had An Opinion About It|Kevin O’Keeffe|December 29, 2014|DAILY BEAST
“Gently rolling hills” roll not-so-gently under my tires, but the English countryside scenery is soporific.
Now-a-days it is the bankrupt who flouts, and his too confiding creditors who are jeered and laughed at.Glances at Europe|Horace Greeley
He felt himself the meanest, vilest thing a-crawl upon this sinful earth, and she—dear God!St. Martin's Summer|Rafael Sabatini
An estimation of the solids, therefore, furnishes an important clue to the functional efficiency of the kidneys.A Manual of Clinical Diagnosis|James Campbell Todd
All that scientific bric-a-brac in the cupboard had far better be thrown away.The Salvaging Of Civilisation|H. G. (Herbert George) Wells
Such throats are trying, are they not?In case one catches cold; Ah, yes!