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noun Uncommon

sentinel

SEHN-tih-nuhl

Sentinel (noun) means a person or animal that stands guard or keeps watch. Example: “A lone sentinel stood at the castle gate all night.”

noun
1
A person or animal that stands guard or keeps watch.
"A lone sentinel stood at the castle gate all night."
2
A sign that warns of a risk, such as an early symptom of a disease.
"Doctors treat the symptom as a sentinel for a more serious condition."

How to use sentinel

Learner’s notes

In plain EnglishSomeone or something that stands watch or gives early warning.

Common mistake

Sentinel and sentry overlap heavily; sentinel sounds slightly more formal or symbolic (a lone sentinel of the old order), while sentry is the everyday word for a guard on duty.

Easily confused with

Word forms

sentineled past tense, sentinelled past tense, sentinels plural, sentinels singular

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A lone _____ stood at the castle gate all night.

Etymology

First recorded in the 1570s, from Middle French sentinelle, ultimately from Italian sentire, "to perceive or watch," from Latin sentiō, "to feel."

Origin: Latin · First attested 1570

Class of 1570 sentinel joined the language around 1570.
See the full Class of 1570 →

Related words

Frequently asked questions

What does “sentinel” mean?

The word “sentinel” means a person or animal that stands guard or keeps watch. In plain terms, someone or something that stands watch or gives early warning.

How do you pronounce “sentinel”?

“Sentinel” is pronounced SEHN-tih-nuhl (/ˈsɛn.tɪ.nəl/ in IPA).

How do you use “sentinel” in a sentence?

Here is “sentinel” used in a sentence: “A lone sentinel stood at the castle gate all night.”

What part of speech is “sentinel”?

“Sentinel” is a noun.

Where does the word “sentinel” come from?

The word “sentinel” dates back to around 1570 and comes from Latin. First recorded in the 1570s, from Middle French sentinelle, ultimately from Italian sentire, "to perceive or watch," from Latin sentiō, "to feel.".

Is “sentinel” a common word?

“Sentinel” is an uncommon word in modern English.

How many meanings does “sentinel” have?

“Sentinel” has 2 distinct senses listed in this dictionary. The most common is: a person or animal that stands guard or keeps watch.

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Definitions: FreeDict original editorial