n. state of being certain; complete assurance; confidence
Though there was no certitude of his getting the job, Lou thought he had a good chance of doing so.
Sentence in Classic:
The clear certitude of his own immunity grew dim and to it succeeded a vague fear that his soul had really fallen unawares.
A Portrait of the Artist as a Young Man By James Joyce Context
And the girl talked, easing her pain in the certitude of my sympathy; she talked as thirsty men drink.
Heart of Darkness By Joseph Conrad Context