flexion

/ˈflɛk.ʃən/

//ˈflɛk.ʃən// noun

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

"flexion" is a 7-letter English headword indexed on PlainSpell.

The verdict

“flexion” has 10 generated spelling variants in the English index at frequency #47,628. The variants make it a useful spelling check.

#47,628
frequency rank, English
2,507
“F” headwords
10
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The act of bending a joint, especially a bone joint; the counteraction of extension.

Corpus desk

Index EN-flexion · flexion · English

flexion · rank #47,628 · 10 variants · 1 confusable

  • FREQ-MID #47,628
  • LEN-LONG 7 letters
  • VOW-3 3 vowels
  • CONFUS-LOW 1 pairs
  • VAR-MID 10 variants
  • BOOK-MID 2,507
  • PHOTO-FINISH flippant

Nearest frequency peer: flippant (+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 “flexion”

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

corpus weight

What this shows “flexion” 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).

flexion vs flexing
71% similar

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

Key facts for flexion
PropertyValue
Headwordflexion
LanguageEnglish
Part of speechNoun
IPA/ˈflɛk.ʃən/
Letters7
Frequency rank#47,628
Misspellings tracked10
Confusable pairs1
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “flexion”

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

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “flippant” (#47,629), “fidget” (#47,626), “floater” (#47,630). Among 2,507 “F” headwords, “flexion” is #47,628. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 10 spelling variants around flexion (IPA /ˈflɛk.ʃən/), anoun. Corpus frequency is #47,628 among 2,507 “F” headwords. Wiktionary lists 4 senses, so context still picks the gloss.

Our generated misspelling index lists 10 likely wrong-spelling variants for flexion, with forms such as "felxion", "fflexion", and "fleixon". 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 1 confusable-pair relationship, "flexing", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: Borrowed from Latin flexiō, from flectō (“I bend, curve”) + -tiō, possibly via French. The correct English form is flexion, spelled F-L-E-X-I-O-N.

Definition

  1. 1
    The act of bending a joint, especially a bone joint; the counteraction of extension.
  2. 2
    The state of being bent or flexed.
  3. 3
    Deviation from straightness.
  4. 4
    The variation of words by declension, comparison, or conjugation; inflection.

Etymology

Borrowed from Latin flexiō, from flectō (“I bend, curve”) + -tiō, possibly via French.

Common misspellings

Also misspelled as:

  • felxion
  • fflexion
  • fleixon
  • flexino
  • flexionn
  • flexoin
  • flexxion
  • fllexion
  • flxeion
  • lfexion

Misspelling Pattern Breakdown

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

felxion2fflexion1fleixon2flexino2flexionn1flexoin2flexxion1fllexion1
Edit distance from "flexion"

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 "flexion"?
"flexion" is spelled F-L-E-X-I-O-N. The IPA pronunciation is /ˈflɛk.ʃən/.
What does "flexion" mean?
As a noun, "flexion" means: The act of bending a joint, especially a bone joint; the counteraction of extension.
What words are commonly confused with "flexion"?
"flexion" is commonly confused with "flexing". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "flexion"?
The IPA (International Phonetic Alphabet) transcription for "flexion" is /ˈflɛk.ʃən/. 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 "flexion"?
Borrowed from Latin flexiō, from flectō (“I bend, curve”) + -tiō, possibly via French. 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 "flexion", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

floater#47,630fretted#47,633ganglia#47,639grouchy#47,660

Similar misspelling depth

Headwords with a similar count of attested misspellings (10 here; floor ≥5).

Hopewell10 variantscymbal10 variantsconifer10 variantsColville10 variants

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

Source: FrequencyWords open word-frequency list