most cocksure

Few trainers, even the most cocksure, were fool enough to buy a horse from the master.

He could make the “cash-money” gestures on field, and be the most cocksure college kid in the land, because Johnny Football almost always delivered on the field.

Even this most cocksure of bands looked slightly nervous for a few seconds, although it wasn't long before singer Ian Brown located the swagger that would be copied by hundreds of frontmen, including a watching Liam Gallagher.

And there is doubtless a certain poetic unity and irony in gathering together three or four of the crudest and most cocksure of the modern theorists, with their shrill voices and metallic virtues, under the fulness and the sonorous sanity of Christian bells.