sept

/sɛpt/

//sɛpt// noun

"sept" is a 4-letter English headword indexed on PlainSpell.

The verdict

“sept” is a regularly-used English word, ranked #3,981 in English word frequency and used as a noun.

#3,981
frequency rank, English
4
letters
6
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A clan, tribe, or family, proceeding from a common progenitor; especially, one of the ancient clans of Ireland.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

sept vs SP
0% similar
sept vs set
75% similar
sept vs sex
50% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for sept
PropertyValue
Headwordsept
LanguageEnglish
Part of speechNoun
IPA/sɛpt/
Letters4
Frequency rank#3,981
Misspellings tracked6
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “sept” 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). sept lands here:

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

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

Spelling & Dictionary Insight

The English entry for sept is 4 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /sɛpt/. Corpus data places it at rank #3,981 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 6 likely wrong-spelling variants for sept, with forms such as "espt", "seppt", and "septt". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 20 confusable-pair relationships, "SP", "set", "sex", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: A corruption of sect, influenced by Latin saeptum (“fence, enclosure”). The correct English form is sept, spelled S-E-P-T.

Definition

  1. 1
    A clan, tribe, or family, proceeding from a common progenitor; especially, one of the ancient clans of Ireland.
  2. 2
    An enclosure; a railing.

Etymology

A corruption of sect, influenced by Latin saeptum (“fence, enclosure”).

Common misspellings

Also misspelled as: espt,seppt,septt,setp,spet,ssept

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of sept - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

espt2seppt1septt1setp2spet2ssept1
Edit distance from "sept"

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 "sept"?
"sept" is spelled S-E-P-T. The IPA pronunciation is /sɛpt/.
What does "sept" mean?
As a noun, "sept" means: A clan, tribe, or family, proceeding from a common progenitor; especially, one of the ancient clans of Ireland.
What words are commonly confused with "sept"?
"sept" is commonly confused with "SP", "set", "sex". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "sept"?
The IPA (International Phonetic Alphabet) transcription for "sept" is /sɛpt/. 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 "sept"?
A corruption of sect, influenced by Latin saeptum (“fence, enclosure”). 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 “sept”

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

  • The one correct English spelling is S-E-P-T - every other letter order is a misspelling in standard orthography.
  • Say it as /sɛpt/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “SP” - see the side-by-side comparison. sept vs SP
  • Browse more English words and confusable pairs in the same reference. English words
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 FrequencyWords open word-frequency list