Of all chimerical suppositions, this seems to be the most chimerical.

Then to look for what can please seems to me the most chimerical of undertakings.

This most chimerical and wonderous thing

Here were all kinds of men, of all times and countries, pursuing the wildest hopes, the most chimerical desires.

But it was reserved for America, the land of daring schemes and audacious plans, to formulate the most chimerical project of all.