watchful

adjective

watch·​ful ˈwäch-fəl How to pronounce watchful (audio)
ˈwȯch-
1
archaic
a
: not able or accustomed to sleep or rest : wakeful
b
: causing sleeplessness
c
: spent in wakefulness : sleepless
2
: carefully observant or attentive : being on the watch
watchfully adverb
watchfulness noun
Choose the Right Synonym for watchful

watchful, vigilant, wide-awake, alert mean being on the lookout especially for danger or opportunity.

watchful is the least explicit term.

the watchful eye of the department supervisor

vigilant suggests intense, unremitting, wary watchfulness.

eternally vigilant in the safeguarding of democracy

wide-awake applies to watchfulness for opportunities and developments more often than dangers.

wide-awake companies latched onto the new technology

alert stresses readiness or promptness in meeting danger or in seizing opportunity.

alert traders anticipated the stock market's slide

Examples of watchful in a Sentence

We need to be more watchful of our children. The hotel is being built under the watchful eye of its architect.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Robin is about 30% autonomous, while a team of operators working remotely controls the rest under the watchful eyes of clinical staff. Hallie Golden The Associated Press, Arkansas Online, 26 Oct. 2025 Palestinian schoolgirls saunter down a street in the Gaza Strip under the watchful eye of an Israeli patrol. Susan Sontag, Vogue, 26 Oct. 2025 Unlike in the advanced labs under the watchful eye of Jurassic Park scientists on the fictional Isla Nublar, much of paleontology isn’t so glamorous. Irene Wright, Miami Herald, 21 Oct. 2025 Their watchful eyes and swift response can make all the difference in a water emergency. Nc Weather Bot, Charlotte Observer, 11 Oct. 2025 See All Example Sentences for watchful

Word History

First Known Use

15th century, in the meaning defined at sense 1a

Time Traveler
The first known use of watchful was in the 15th century

Browse Nearby Words

Cite this Entry

“Watchful.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/watchful. Accessed 29 Oct. 2025.

Kids Definition

watchful

adjective
watch·​ful ˈwäch-fəl How to pronounce watchful (audio)
ˈwȯch-
: continually on the lookout especially for danger
watchfully adverb
watchfulness noun

More from Merriam-Webster on watchful

Last Updated: - Updated example sentences
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