spool

/spuːl/

//spuːl// noun

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

"spool" is a 5-letter English headword indexed on PlainSpell.

The verdict

“spool” has 7 generated spelling variants in the English index at frequency #35,530. The variants make it a useful spelling check.

#35,530
frequency rank, English
6,566
“S” headwords
7
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A reel; a device around which thread, wire or cable is wound, especially a cylinder or spindle.

Corpus desk

Index EN-spool · spool · English

spool · rank #35,530 · 7 variants · 20 confusables

  • FREQ-MID #35,530
  • LEN-MID 5 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-MID 7 variants
  • BOOK-DENSE 6,566
  • PHOTO-FINISH sprouting

Nearest frequency peer: sprouting (+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 “spool”

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

corpus weight

What this shows “spool” 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).

spool vs spot
60% similar
spool vs sport
60% similar
spool vs stood
60% similar

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

Key facts for spool
PropertyValue
Headwordspool
LanguageEnglish
Part of speechNoun
IPA/spuːl/
Letters5
Frequency rank#35,530
Misspellings tracked7
Confusable pairs20
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “spool”

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).spoollands 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 “sprouting” (#35,531), “spurt” (#35,532), “Spector” (#35,527). Among 6,566 “S” headwords, “spool” is #35,530. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 7 spelling variants around spool (IPA /spuːl/), anoun. Corpus frequency is #35,530 among 6,566 “S” headwords. Wiktionary lists 4 senses, so context still picks the gloss.

Our generated misspelling index lists 7 likely wrong-spelling variants for spool, with forms such as "psool", "sopol", and "spol". 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, "spot", "sport", "stood", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Middle English spole (possibly via Old Northern French spole, espole), from Middle Dutch spoele, from Old Dutch *spōla, *spuola, from Proto-Germanic *spōlǭ (“spool”), from Proto-Indo-European *(s)pel- (“to cleave, split”). Cognate with Saterland Frisia… The correct English form is spool, spelled S-P-O-O-L.

Definition

  1. 1
    A reel; a device around which thread, wire or cable is wound, especially a cylinder or spindle.
  2. 2
    One of the rotating assemblies of a gas turbine engine, composed of one or more turbine stages, a shaft, and one or more compressor or fan stages.
  3. 3
    A temporary storage area for electronic mail, etc.
  4. 4
    A splinter caught in the skin.

Recorded use

Wiktionary examples

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

  1. If you need to reload film, the cassette can be rewound slightly by turning the hub located on one end of its spool.
  2. The high-pressure spool rotates faster than the intermediate- and low-pressure spools, as the high-pressure turbine is driven by superheated combustion gases straight out of the burners, while the high-pressure compressor has to spin very fast to compress air that has already been compressed and heated by the low- and intermediate-pressure compressors.

Etymology

From Middle English spole (possibly via Old Northern French spole, espole), from Middle Dutch spoele, from Old Dutch *spōla, *spuola, from Proto-Germanic *spōlǭ (“spool”), from Proto-Indo-European *(s)pel- (“to cleave, split”). Cognate with Saterland Frisian Spoule (“spool”), Dutch spoel (“spool”), German Spule (“spool”), Swedish spole (“spool”), Icelandic spóla (“spool; reel”). The aviation usage is based on the visual similarity of one of the spools of a turbine engine to a spool used for thread (especially in cross-section). See also spill.

This word in other languages

carrete(Español)bobine(Français)Spule(Deutsch)carretel(Português)

Common misspellings

Also misspelled as:

  • psool
  • sopol
  • spol
  • spolo
  • spooll
  • sppool
  • sspool

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of spool - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

psool2sopol2spol1spolo2spooll1sppool1sspool1
Edit distance from "spool"

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 "spool"?
"spool" is spelled S-P-O-O-L. The IPA pronunciation is /spuːl/.
What does "spool" mean?
As a noun, "spool" means: A reel; a device around which thread, wire or cable is wound, especially a cylinder or spindle.
What words are commonly confused with "spool"?
"spool" is commonly confused with "spot", "sport", "stood". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "spool"?
The IPA (International Phonetic Alphabet) transcription for "spool" is /spuːl/. 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 "spool"?
From Middle English spole (possibly via Old Northern French spole, espole), from Middle Dutch spoele, from Old Dutch *spōla, *spuola, from Proto-Germanic *spōlǭ (“spool”), from Proto-Indo-European *(s)pel- (“to cleave, split”). Cognate with Saterl... 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 "spool", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 5 letters (nearest by frequency rank).

spurt#35,532Sunil#35,544seton#35,508teary#35,553

Similar misspelling depth

Headwords with a similar count of attested misspellings (7 here; floor ≥5).

Shiite7 variantsSegal7 variantsYoshi7 variantsPatna7 variants

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

Source: FrequencyWords open word-frequency list