Above/beyond suspicion
Definition 1 of 1
Pro Tip 1/3Absolute Integrity
The phrase suggests someone is so honest that others cannot doubt them. 
The charity's operations were above suspicion, showcasing their absolute integrity.
Pro Tip 2/3Not Just Innocent
It means more than not guilty; it implies there's not even a hint of wrongdoing. 
Even after intense scrutiny, the official remained beyond suspicion.
Pro Tip 3/3Context Matters
The phrase is often used in legal, professional, or moral discussions about someone's conduct. 
As a witness, her testimony was above suspicion due to her expertise and neutrality.