probity - honesty
The formal word ‘probity’ expresses an adherence to lofty principles and ideas. As such, it implies integrity and being morally and ethically above reproach. The term is also frequently used in relation to money to express financial prudence and responsibility. Has highly positive connotations.
I have done business with that client for over a decade and will continue to do so as I have always found them to be a model of probity.
We managed to weather the hard times of the recession thanks to our principle of, and commitment to, fiscal probity.
That public figure liked to portray himself as a bastion of moral probity, but the scandal revealed that in his private life he was anything but that.