noun
rectitude
REK-tih-tood/ˈrektɪtuːd/
Moral correctness in character and conduct.
The woman's rectitude shows when she returns the wallet with its money intact.

Etymology
Rectitude originally named the quality of being physically straight or erect. Applied to character, this became moral “uprightness”: rightness in conduct or principle.
In context
insurgents lacking rectitude will struggle to get others to accept whatever is morally ambivalent about their position or deeds
More examples
- He shows his rectitude by refusing to accept bribes.
- The scandal casts doubt on the director's moral rectitude.
- She values rectitude more than wealth or social status.