Convinceable

It may be thought that able ought to be changed into ible, especially after g and c soft: as convincible, tangible, &c.; but it seems better to preserve uniformity by writing convinceable, tangeable, or touchable.

But in truth, reason, in little-thinking and much-acting men, who pass pretty frequently from a youth of utter instability to a maturity of set stiffness, is by no means the ever-living, and therefore ever-open and convinceable thing we seem to think.

The convinceable young man stands in the same relationship to the vicar as the convinceable reader of the Emile to Rousseau.

I would suspect that those who are not at all convinced by it have distinct prejudices of their own and are not too convinceable!