Meanings of so specious in English

But so specious a piece of special pleading cannot serve Clive's turn.

However, he being unable to gainsay so specious an argument, we got the king away.

All this was so specious and plausible.

With eagerness the people took up these new ideas of social reform, so specious and so full of promises.

His words were so specious.

The tale was so specious!

This reasoning is so specious, that it is received as true even by those who in daily experience feel it to be false.

This project appeared so practicable and so specious, that I deeply regretted the time and the efforts which had already been so fruitlessly expended.

Shall we, for the sake of one man so specious and plausible, learn to think the language of all men equally empty and deceitful?

He was very angry, because his vanity was hurt, and the pin-prick spurred him to a counterfeit so specious that consciously he gloried in it.

It was his fatal habit of self-depreciation that was making Claire's words so specious as he stood there trying to cast them from his mind.