sphincter

/ˈsfɪŋk.tɚ/

//ˈsfɪŋk.tɚ// noun

"sphincter" is a 9-letter English headword indexed on PlainSpell.

The verdict

“sphincter” has 15 generated spelling variants in the English index at frequency #39,102. The variants make it a useful spelling check.

#39,102
frequency rank, English
6,566
“S” headwords
15
tracked misspellings
3
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A ringlike band of muscle that surrounds a bodily opening (such as the anus or the openings of the stomach), constricting and relaxing as required for normal physiological functioning.

Corpus desk

Index EN-sphincter · sphincter · English

sphincter · rank #39,102 · 15 variants · 3 confusables

  • FREQ-MID #39,102
  • LEN-LONG 9 letters
  • VOW-2 2 vowels
  • CONFUS-LOW 3 pairs
  • VAR-HIGH 15 variants
  • BOOK-DENSE 6,566
  • PHOTO-FINISH spender

Nearest frequency peer: spender (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Rank peers near misspelling magnet “sphincter”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “sphincter” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

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

sphincter vs splinter
78% similar
sphincter vs sprinter
78% similar
sphincter vs spinster
78% similar

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

Key facts for sphincter
PropertyValue
Headwordsphincter
LanguageEnglish
Part of speechNoun
IPA/ˈsfɪŋk.tɚ/
Letters9
Frequency rank#39,102
Misspellings tracked15
Confusable pairs3
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “sphincter”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).sphincterlands here:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “spender” (#39,101), “sorceress” (#39,098), “Stalinist” (#39,106). Among 6,566 “S” headwords, “sphincter” is #39,102. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 15 spelling variants around sphincter (IPA /ˈsfɪŋk.tɚ/), anoun. Corpus frequency is #39,102 among 6,566 “S” headwords. Dominant gloss: "A ringlike band of muscle that surrounds a bodily opening (such as the anus or the openings of the stomach), constricting and relaxing as required for normal physiological functioning.".

Our generated misspelling index lists 15 likely wrong-spelling variants for sphincter, with forms such as "pshincter", "shpincter", and "sphhincter". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 3 confusable-pair relationships, "splinter", "sprinter", "spinster", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: Etymology tree Late Latin sphinctērlbor. English sphincter Learned borrowing from Late Latin sphinctēr (“the muscle of the anus”), from Ancient Greek σφῐγκτήρ (sphĭnktḗr, “lace, band; contractile muscle”), ultimately of Pre-Greek origin. Possibly related to… The correct English form is sphincter, spelled S-P-H-I-N-C-T-E-R.

Definition

  1. 1
    A ringlike band of muscle that surrounds a bodily opening (such as the anus or the openings of the stomach), constricting and relaxing as required for normal physiological functioning.

Recorded use

Wiktionary examples

These source excerpts show how sphincter appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. the sphincter of the bladder
  2. the iris sphincter in the eye

Etymology

Etymology tree Late Latin sphinctērlbor. English sphincter Learned borrowing from Late Latin sphinctēr (“the muscle of the anus”), from Ancient Greek σφῐγκτήρ (sphĭnktḗr, “lace, band; contractile muscle”), ultimately of Pre-Greek origin. Possibly related to sphinx (“the strangler”).

This word in other languages

Common misspellings

Also misspelled as:

  • pshincter
  • shpincter
  • sphhincter
  • sphicnter
  • sphinccter
  • sphincetr
  • sphincterr
  • sphinctre
  • sphinctter
  • sphinncter
  • sphintcer
  • sphnicter
  • spihncter
  • spphincter
  • ssphincter

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of sphincter - 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.

pshincter2shpincter2sphhincter1sphicnter2sphinccter1sphincetr2sphincterr1sphinctre2
Edit distance from "sphincter"

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 "sphincter"?
"sphincter" is spelled S-P-H-I-N-C-T-E-R. The IPA pronunciation is /ˈsfɪŋk.tɚ/.
What does "sphincter" mean?
As a noun, "sphincter" means: A ringlike band of muscle that surrounds a bodily opening (such as the anus or the openings of the stomach), constricting and relaxing as required for normal physiological functioning.
What words are commonly confused with "sphincter"?
"sphincter" is commonly confused with "splinter", "sprinter", "spinster". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "sphincter"?
The IPA (International Phonetic Alphabet) transcription for "sphincter" is /ˈsfɪŋk.tɚ/. 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 "sphincter"?
Etymology tree Late Latin sphinctērlbor. English sphincter Learned borrowing from Late Latin sphinctēr (“the muscle of the anus”), from Ancient Greek σφῐγκτήρ (sphĭnktḗr, “lace, band; contractile muscle”), ultimately of Pre-Greek origin. Possibly ... 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "sphincter", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

Similar misspelling depth

Headwords with a similar count of attested misspellings (15 here; floor ≥5).

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

Source: FrequencyWords open word-frequency list