perfidious
Meaning: disloyal, unfaithful
Usage: The perfidious aide secretly shared the team’s strategy with its rival.
fidelity
Meaning: loyalty, devotion
Usage: Guard dogs are known for the great fidelity they show toward their masters.
veracity
Meaning: truthfulness, accuracy
Usage: With several sources confirming the report, it was difficult to question its veracity.
candor
Meaning: honesty, frankness
Usage: We were surprised by the candor of the mayor’s speech because he is usually rather evasive.
probity
Meaning: virtue, integrity
Usage: Because he was never viewed as a man of great probity, no one was surprised by Mr. Samson’s immoral behavior.