Which preposition to use with sceptical

of Occurrences 15%

Morriston and his companions were eagerly questioned as to what had come out at the inquest, but, except that the medical evidence was rather sceptical of the suicide theory, were unable to relieve the curiosity.

as Occurrences 14%

He seemed rather sceptical as to the peaceful issue of the negotiationsthought so many unforeseen questions would come up and complicate matters.

in Occurrences 13%

Any reader who is sceptical in regard to the cultivation of the senses, would do well to consult the account of Julia Brace, the deaf and dumb and blind girl, as published in some of the early volumes of the "Annals of Education.

about Occurrences 10%

Before an examination, the wish to succeed will make me sceptical about my prospects, much as I should like to think them the brightest; afterwards, when self-deception can only console and can do no harm, I shall be credulous of any flattery that is offered me.

on Occurrences 2%

The inference is, therefore, sufficiently plain, that the dedicator knew that Dryden was sceptical on the subject, on which he had, out of compliment to Church and State, affected a conviction; and that his "Religio Laici" no more inferred a belief in the doctrines of Christianity, than the sacrifice of a cock to Esculapius proved the heathen philosopher's faith in the existence of that divine leech.

to Occurrences 2%

One of the regular habitues was the Marquis de N., a charming man, fairly broad-minded (given the atmosphere he lived in) and sceptical to the highest degree.

Which preposition to use with  sceptical