"slim evidence" is a correct and usable phrase in written English.
It is commonly used to indicate a small or inadequate amount of evidence, such as when trying to prove a point or during legal proceedings. For example, "The prosecution had only slim evidence to make their case against the defendant, so the jury found him not guilty".
Some assertions, based on slim evidence, are almost literally imaginary.
First, despite all the claims, there is slim evidence to link cancer definitively to September 11th.
The indications that the entire case was "concocted," as you say, by the security forces rest on very slim evidence.
It was a measure of Stone's reputation at that point that a top Democrat had attempted, on such slim evidence, to link him to a campaign transgression.
But I object to any argument -- especially one that rests on such slim evidence -- that works against striving for consistent academic success and celebrates intellectual underachievement.
On this slim evidence of infidelity, she abandons her parents and in-laws and takes her three daughters -- ages 4 to 14 -- on a harrowing six-month overland trek across war-torn China.
But a tiny, vocal minority of researchers contests that view, and has seemed in the last few years to be winning the battle of public opinion despite slim scientific evidence for their position.
The two governments were wary and combative, especially after the Bolsheviks foiled a 1918 British-sponsored coup, possibly because Ransome tipped them off — or so Chambers speculates, on slim circumstantial evidence.
Current clinical practice for management is based on slim empirical evidence" ([ 18], p 337).
"On the slimmest of evidence we introduced estrogen to women," he said, "and the public was whipped up to ask for it".
Before succeeding his father, Pepi lived through the brief reign of Userkare, whose relationship to Teti is unknown and who has been considered, on the slimmest of evidence, to have been a usurper.
