noun
definition
An alarm.
definition
A notification of higher importance than an advisory.
definition
A state of readiness for potential combat.
example
an airborne alert; ground alert
adjective
definition
Attentive; awake; on guard.
definition
Brisk; nimble; moving with celerity.
Examples of alert in a Sentence
How did you alert them?
He's always been so alert and in control.
Alex was alert for the rest of the ride, even noting a bear track once.
He'd have to alert her to the danger.
He was willing to personally alert the local police and have them check out the vehicle even without clear cut identification.
The look of his eyes was resolute, calm, and animatedly alert, as never before.
An alert popped up on the screen before her as well as on her micro, and she opened it.
There are many ways in which a whipper-in who is not intelligent and alert may spoil sport; indeed, the duke of Beaufort went so far as to declare that "in his experience, with very few exceptions, nine days out of ten that the whipper-in goes out hunting he does more harm than good."
It will alert you when you have mice or termites.
But alert and healthy natures remember that the sun rose clear.
But that he was sufficiently alert as the principal adviser of the elector the results of his labours in that capacity amply prove.
The fever had left him, and while he looked pale beneath his cocoa skin, he was alert and his speech coherent.
She perched on the edge of one table, fidgeting hands in her lap and bright features alert as she focused on some point on the screen.
He entered the drawing room with his usual alert step, glancing rapidly round the company.
And there is nothing hidden in these injections that will alert your kind?
It will know everyone who is supposed to be in the house and alert you when someone else is in the house (replacing the family dog of old in whom we never fully placed our trust).
Sirian partnered with Rissa while the guards fanned out around them, one alert while the other four paired up to spar.
I'll issue an alert to the Immortals.
In woodland countries, however, a good whipper-in is really of almost as much importance as the huntsman himself; if he is not alert the hounds are likely to divide, as when running a little wide they are apt to put up a fresh fox.
She had to get out of there before Jade found a way to alert Sasha.
The Directory, then, was in a minority in the country, and had to be ever on the alert against faction; all possible methods seemed legitimate, and during two years appeared Struggle successful.
That night, after I had hung my stocking, I lay awake a long time, pretending to be asleep and keeping alert to see what Santa Claus would do when he came.
Sunderland inherited his father's passion for intrigue, while his manners were repelling, but he stands high among his associates for disinterestedness and had an alert and discerning mind.
He kept my mind alert and eager, and trained it to reason clearly, and to seek conclusions calmly and logically, instead of jumping wildly into space and arriving nowhere.
We can still break through those in the north provided we alert our allies and pull in the southern armies, Hilden explained.
I cautioned her to remain alert.
If you try to alert anyone or escape, I'll peel your skin from your bodies and watch you scream, Harmony warned.
Whether or not it translated or whether her voice was enough to alert him, all eyes fell to her before the conversation resumed.
Some of the United States planters are alert to take advantage of the application of science to industry, and in many cases even to render active assistance, and very successful results have been attained by the co-operation of the United States Department of Agriculture and planters.
The brain is more alert during daytime hours.
It was an Amber alert.
Actually, all she wanted to do was alert him that she was nervous about it, but if it made him feel better to know she was willing to discuss intimacy with him now, then she would listen.
Half a moment before she stepped through the portal, she triggered a magic alert that reverberated through him.
Sit up and appear interested, alert and enthusiastic.
Fully alert, he listened, but heard only night noises, the ticking of the hall clock, a slight breeze, the ever-present furnace rumbling heat to the old building.
Her micro was bright with an alert.
It was alert, cheerful and aggressive, was greatly helped by the attacks of rival papers, and promised success almost from the start.
His genius was unusually rich and versatile; his artistic conscience always alert and sober.
He was a successful leader in guerilla warfare, alert and quick, yet cautious - a man, moreover, whose personal bravery was unquestioned.
At that moment Count Rostopchin with his protruding chin and alert eyes, wearing the uniform of a general with sash over his shoulder, entered the room, stepping briskly to the front of the crowd of gentry.
Immediately she was alert.
Brutus came running out of nowhere, his tail curled in its alert position and his big tongue hanging out.
He rode hard until the horse's breathing grew labored and then he slowed, senses alert.
Gerald and Aaron looked suddenly alert.
At Magude, the river has been well above flood alert level for more than a month.
The body produces chemicals throughout the day to keep you active and alert.
You're going to have to stay alert , make sure the blaster in front of you is fully loaded, and if you're in a bind, maybe enter a secret code to help you out in this awesome first-person shooter.
He followed them into the worn down building, senses alert.
It brought to bear on officials effective criticism, which made them alert and hard-working.
He returned to the mainland at the head of 200 convicts, and committed further excesses in the Terra di Lavoro; but the French troops were everywhere on the alert to capture him and he had to take refuge in the woods of Lenola.