Which preposition to use with outspokenness

of Occurrences 4%

"Miss Sarah retains the outspokenness of her recently discarded childhood, I perceive," said Sir Timothy, stiffly.

to Occurrences 2%

Murena also was said, whether truly or by way of calumny, to have been one of the conspirators, since he was insatiate and unsparing in his outspokenness to all alike.

at Occurrences 1%

This was what Lady Russell felt about him; his fearless outspokenness at Court always impressed her.

beyond Occurrences 1%

He showed himself a passionate adherent of the populace as did no one else, and indulged in outspokenness beyond the limits of propriety, even when it involved danger.

on Occurrences 1%

The effect of this expressive outspokenness on the part of the cañon-rocks is greatly enhanced by the quiet aspect of the alpine meadows through which we pass just before entering the narrow gateway.

Which preposition to use with  outspokenness