Meanings of certain alertness in inglês

A certain alertness seemed to have deserted her usually piquant face.

What he finally thought he caught in this most unusual tenderfoot was a certain alertness of a more or less hair-trigger variety.

But a close observer would have seen, as Alfred did, that there was a certain alertness in that rigid and motionless figure.

There was, moreover, a certain alertness in her expression rarely found in the feminine population of Millbourne, who were apt to be slightly bovine.

Even the use of venom a second time possesses the disadvantage of a certain alertness against the very thing on the part of the victim.

"Aha!" she commented, with a certain alertness of perception shining through the stolidity of her mien.