1
as in carefulness
a close attentiveness to avoiding danger
drove through the fog with extra alertness, as the road signs repeatedly warned of deer and moose crossings
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in watchfulness
the state of being constantly attentive and responsive to signs of opportunity, activity, or danger
we observed the U.S. border patrol's intensified alertness for drug smugglers at the border stations
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of alertness
Drinking coffee before an important task, such as a work project or athletic activity, can help to increase energy and alertness and improve performance.
—
Ashley Olivine, Verywell Health, 28 Aug. 2025
Authorities have stepped up their cautionary tone in the past year in the hope of raising citizens’ alertness levels.
—Chris Lau, CNN Money, 27 Aug. 2025
Higher levels of 1-stearoyl-2-arachidonoyl-GPC – a fat molecule involved in building cell membranes and hormone signaling – were linked to less sleepiness, possibly by maintaining brain alertness.
—New Atlas, 24 Aug. 2025
Consuming coffee immediately prior to a nap has been shown to improve alertness during the day and may be particularly beneficial for shift workers or afternoon energy dips.
—Allison Palmer
august 19, Sacbee.com, 19 Aug. 2025
When chewed, these reddish nuts, which are the fruit of the areca palm, release psychoactive compounds that heighten alertness and energy, promote feelings of euphoria, and help with relaxation.
—Elizabeth Rayne, ArsTechnica, 19 Aug. 2025
Raised ears indicate alertness.
—Dawn Kovell, Mercury News, 19 Aug. 2025
By emitting intense light, SAD technology is designed to enhance energy and alertness.
—Michael Verdon, Robb Report, 15 Aug. 2025
Ashley Olivine, Verywell Health, 28 Aug. 2025
Authorities have stepped up their cautionary tone in the past year in the hope of raising citizens’ alertness levels.
—Chris Lau, CNN Money, 27 Aug. 2025
Higher levels of 1-stearoyl-2-arachidonoyl-GPC – a fat molecule involved in building cell membranes and hormone signaling – were linked to less sleepiness, possibly by maintaining brain alertness.
—New Atlas, 24 Aug. 2025
Consuming coffee immediately prior to a nap has been shown to improve alertness during the day and may be particularly beneficial for shift workers or afternoon energy dips.
—Allison Palmer
august 19, Sacbee.com, 19 Aug. 2025
When chewed, these reddish nuts, which are the fruit of the areca palm, release psychoactive compounds that heighten alertness and energy, promote feelings of euphoria, and help with relaxation.
—Elizabeth Rayne, ArsTechnica, 19 Aug. 2025
Raised ears indicate alertness.
—Dawn Kovell, Mercury News, 19 Aug. 2025
By emitting intense light, SAD technology is designed to enhance energy and alertness.
—Michael Verdon, Robb Report, 15 Aug. 2025
Recent Examples of Synonyms for alertness
Noun
-
The incident response was out of an abundance of caution, according to Phoenix police spokesperson Sgt.—
Stacey Barchenger,
AZCentral.com,
29 Aug. 2025
-
Take extra caution when on the road or avoid driving if possible.—
KANSAS CITY STAR WEATHER BOT,
Kansas City Star,
29 Aug. 2025
Noun
-
Sheriff’s officials stressed the importance of community vigilance.—
Stepheny Price,
FOXNews.com,
3 Sep. 2025
-
Its continued survival is a reminder that conservation requires not just success stories but constant vigilance.—
Sarah Kingdom,
Forbes.com,
28 Aug. 2025
Noun
-
This number varies by age and location, but in the instance that private child care providers can receive $10,000 through the ESA program, that means the majority of tuition could be covered for families considering this option.—
Lina Ruiz
September 8,
Fort Worth Star-Telegram,
8 Sep. 2025
-
Available in 9 different colors, the hanging organizer has four different zippered compartments roomy enough to hold full-size hair care products, brushes, combs, and more.—
Amelia McBride,
Travel + Leisure,
8 Sep. 2025
Noun
-
The show, now in its sixth year, has become an important date on the calendar for watch lovers and the trade alike, and stands as the most inclusive show based on new introductions from the 66 participating brands.—
Carol Besler,
Forbes.com,
8 Sep. 2025
-
This watch guide was created using technology provided by Data Skrive.—
Data Skrive,
New York Times,
8 Sep. 2025
Noun
-
This was a chance for Biden to take the high road, to toe the fiscal line and display financial prudence.—
Boston Herald editorial staff,
Boston Herald,
31 Aug. 2025
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The scene serves as a powerful example of prudence, which is often misunderstood, as the team faces the challenging decision of how to save and manage the energy needed to bring the module back.—
Mary Crossan,
Forbes.com,
16 Aug. 2025
Noun
-
The alert last for around three hours.—
David Brennan,
ABC News,
7 Sep. 2025
-
What was once the season of patios and long days has increasingly turned into one of heat advisories, wildfire smoke, and smog alerts.—
Alexandra Emanuelli,
Travel + Leisure,
6 Sep. 2025
Noun
-
Thirty-three states have enacted legislation regarding school cellphone usage amid a growing push to restrict students’ smartphone access in schools, primarily due to mental health and concerns about academic attentiveness.—
Rachel Hale,
USA Today,
19 Aug. 2025
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This helps replicate the attentiveness of an in-store associate at scale.—
Charisma Glassman,
Forbes.com,
13 Aug. 2025
Cite this Entry
“Alertness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/alertness. Accessed 9 Sep. 2025.
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