alertly

From alert + -ly.

alertly (comparative more alertly, superlative most alertly)

1. In an alert manner; with alertness.
   • 1823 December 23 (indicated as 1824), [Walter Scott], chapter 9, in St Ronan’s Well. […], volume (please specify |volume=I to III), Edinburgh: […] [James Ballantyne and Co.] for Archibald Constable and Co.; London: Hurst, Robinson, and Co., →OCLC:

     Behind one of the old oaks which we have described in the preceding chapter, shrouding himself from observation like a hunter watching for his game, or an Indian for his enemy, but with different, very different purpose, Tyrrel lay on his breast near the Buck-stane, his eye on the horse-road which winded down the valley, and his ear alertly awake to every sound which mingled with the passing breeze, or with the ripple of the brook.

   • 1897, H[erbert] G[eorge] Wells, chapter 23, in The Invisible Man: A Grotesque Romance, New York, N.Y.; London: Harper & Brothers Publishers, →OCLC:

     I walked fast to avoid being overtaken. Every crossing was a danger, every passenger a thing to watch alertly.

   • 1925, F[rancis] Scott Fitzgerald, chapter 1, in The Great Gatsby, New York, N.Y.: Charles Scribner’s Sons, published 1953, →ISBN, →OCLC:

     Miss Baker and I exchanged a short glance consciously devoid of meaning. I was about to speak when she sat up alertly and said “Sh!” in a warning voice.

   • 2004, Alan Hollinghurst, The Line of Beauty […], London: Picador, →ISBN:

     She was wearing tight white shorts and a grey tank top of Jasper’s, in which her small breasts moved alertly.

• elytral, laterly, retally