suffix

/ˈsʌfɪks/

//ˈsʌfɪks// noun

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

"suffix" is a 6-letter English headword indexed on PlainSpell.

The verdict

“suffix” has 7 generated spelling variants in the English index at frequency #27,302. The variants make it a useful spelling check.

#27,302
frequency rank, English
6,566
“S” headwords
7
tracked misspellings
3
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A morpheme added at the end of a word to modify the word's meaning.

Corpus desk

Index EN-suffix · suffix · English

suffix · rank #27,302 · 7 variants · 3 confusables

  • FREQ-MID #27,302
  • LEN-LONG 6 letters
  • VOW-2 2 vowels
  • CONFUS-LOW 3 pairs
  • VAR-MID 7 variants
  • BOOK-DENSE 6,566
  • PHOTO-FINISH subunit

Nearest frequency peer: subunit (-2 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 “suffix”

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

corpus weight

What this shows “suffix” 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).

suffix vs Sufi
50% similar
suffix vs suffer
67% similar
suffix vs suffice
71% similar

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

Key facts for suffix
PropertyValue
Headwordsuffix
LanguageEnglish
Part of speechNoun
IPA/ˈsʌfɪks/
Letters6
Frequency rank#27,302
Misspellings tracked7
Confusable pairs3
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “suffix”

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).suffixlands 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 “subunit” (#27,300), “Stubbs” (#27,299), “swede” (#27,305). Among 6,566 “S” headwords, “suffix” is #27,302. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 7 spelling variants around suffix (IPA /ˈsʌfɪks/), anoun. Corpus frequency is #27,302 among 6,566 “S” headwords. Wiktionary lists 3 senses, so context still picks the gloss.

Our generated misspelling index lists 7 likely wrong-spelling variants for suffix, with forms such as "sfufix", "ssuffix", and "suffixx". 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 also participates in 3 confusable-pair relationships, "Sufi", "suffer", "suffice", a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: Borrowed from Latin suffīxus (“suffix”), from sub- (“under”) + fīxus (perfect passive participle of fīgere (“to fasten, fix”)), equivalent to sub- + -fix. The correct English form is suffix, spelled S-U-F-F-I-X.

Definition

  1. 1
    A morpheme added at the end of a word to modify the word's meaning.
  2. 2
    A subscript.
  3. 3
    A final segment of a string of characters.

Recorded use

Wiktionary examples

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

  1. The suffix "-able" changes "sing" into "singable".
  2. The praenomen and nomen for the most part consisted of simple stems with the suffix -us or -ius, […]

Etymology

Borrowed from Latin suffīxus (“suffix”), from sub- (“under”) + fīxus (perfect passive participle of fīgere (“to fasten, fix”)), equivalent to sub- + -fix.

This word in other languages

sufijo(Español)Suffix(Deutsch)sufixo(Português)

Common misspellings

Also misspelled as:

  • sfufix
  • ssuffix
  • suffixx
  • suffxi
  • sufifx
  • sufix
  • usffix

Misspelling Pattern Breakdown

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

sfufix2ssuffix1suffixx1suffxi2sufifx2sufix1usffix2
Edit distance from "suffix"

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 "suffix"?
"suffix" is spelled S-U-F-F-I-X. The IPA pronunciation is /ˈsʌfɪks/.
What does "suffix" mean?
As a noun, "suffix" means: A morpheme added at the end of a word to modify the word's meaning.
What words are commonly confused with "suffix"?
"suffix" is commonly confused with "Sufi", "suffer", "suffice". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "suffix"?
The IPA (International Phonetic Alphabet) transcription for "suffix" is /ˈsʌfɪks/. 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 "suffix"?
Borrowed from Latin suffīxus (“suffix”), from sub- (“under”) + fīxus (perfect passive participle of fīgere (“to fasten, fix”)), equivalent to sub- + -fix. 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 "suffix", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 6 letters (nearest by frequency rank).

Stubbs#27,299somber#27,291tremor#27,316Ulrich#27,319

Similar misspelling depth

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

swede7 variantsteeny7 variantsvetted7 variantsRCMP7 variants

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

Source: FrequencyWords open word-frequency list