sentinel

/ˈsɛn.tɪ.nəl/

//ˈsɛn.tɪ.nəl// noun

By · According to Wiktionary data (CC BY-SA) ·

"sentinel" is a 8-letter English headword indexed on PlainSpell.

The verdict

“sentinel” has 12 generated spelling variants in the English index at frequency #17,027. The variants make it a useful spelling check.

#17,027
frequency rank, English
54,294
“S” headwords
12
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A sentry, watch, or guard.

Key facts for sentinel
PropertyValue
Headwordsentinel
LanguageEnglish
Part of speechNoun
IPA/ˈsɛn.tɪ.nəl/
Letters8
Frequency rank#17,027
Misspellings tracked12
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “sentinel” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). sentinel lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 12 spelling variants around sentinel (IPA /ˈsɛn.tɪ.nəl/), anoun. Corpus frequency is #17,027 among 54,294 “S” headwords. Wiktionary lists 5 senses, so context still picks the gloss.

Our generated misspelling index lists 12 likely wrong-spelling variants for sentinel, with forms such as "esntinel", "senitnel", and "senntinel". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It is not paired with a close-neighbour confusable in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: 1570s, from Middle French sentinelle, from Old Italian sentinella (perhaps via a notion of "perceive, watch", compare Italian sentire (“to feel, hear, smell”)), from Latin sentiō (“feel, perceive by the senses”). See sense, sentient. The correct English form is sentinel, spelled S-E-N-T-I-N-E-L.

Definition

  1. 1
    A sentry, watch, or guard.
  2. 2
    A private soldier.
  3. 3
    A unique value recognised by a computer program for processing in a special way, or marking the end of a set of data.
  4. 4
    A sentinel crab.
  5. 5
    A sign of a health risk (e.g. a disease, an adverse effect).

Etymology

1570s, from Middle French sentinelle, from Old Italian sentinella (perhaps via a notion of "perceive, watch", compare Italian sentire (“to feel, hear, smell”)), from Latin sentiō (“feel, perceive by the senses”). See sense, sentient.

This word in other languages

guarda(Español)factionnaire(Français)Wache(Deutsch)vigia(Português)

Common misspellings

Also misspelled as:

  • esntinel
  • senitnel
  • senntinel
  • sentienl
  • sentinell
  • sentinle
  • sentinnel
  • sentniel
  • senttinel
  • setninel
  • snetinel
  • ssentinel

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of sentinel - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

esntinel2senitnel2senntinel1sentienl2sentinell1sentinle2sentinnel1sentniel2
Edit distance from "sentinel"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "sentinel"?
"sentinel" is spelled S-E-N-T-I-N-E-L. The IPA pronunciation is /ˈsɛn.tɪ.nəl/.
What does "sentinel" mean?
As a noun, "sentinel" means: A sentry, watch, or guard.
What are common misspellings of "sentinel"?
Common misspellings include "esntinel", "senitnel", "senntinel", "sentienl", "sentinell". The correct spelling is "sentinel".
How do you pronounce "sentinel"?
The IPA (International Phonetic Alphabet) transcription for "sentinel" is /ˈsɛn.tɪ.nəl/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "sentinel"?
1570s, from Middle French sentinelle, from Old Italian sentinella (perhaps via a notion of "perceive, watch", compare Italian sentire (“to feel, hear, smell”)), from Latin sentiō (“feel, perceive by the senses”). See sense, sentient. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “sentinel”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is S-E-N-T-I-N-E-L - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈsɛn.tɪ.nəl/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words

Same frequency band

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list