FESvsFTSEConfusable pair

Quick tell: FES is a noun, FTSE is a name, so they fill different roles in a sentence.

Which to use

“FES” is a noun and “FTSE” is a name - they look or sound alike but fill different roles in a sentence.

#39,812
“FES” frequency rank
#38,851
“FTSE” frequency rank
78663
confusion score

Side-by-Side Comparison

Feature FES FTSE
Definition Initialism of floppy eyelid syndrome Financial Times and Stock Exchange.

Letter map: FES vs FTSE

Shared letters muted; letters that set FES and FTSE apart highlighted. Shared run: 2. FES runs 3 letters (CVC) against FTSE's 4 (CCCV) - the length gap alone is often enough to separate them once you know to check it.

3 ch
FES
4 ch
FTSE

Part-of-speech tell for FES / FTSE

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: FES is anoun and FTSEaname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 78663, derived from the frequency rank of both members and their visual similarity.

FES is recorded at frequency rank #39,812, classified as anoun. FTSE is at rank #38,851, tagged as aname, pronounced /ˈfʊt.si/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 78663, this pair ranks #24,042 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of FES vs FTSE

Shared letters: efs. Private to "FES": -. Private to "FTSE": t.

"FES" · 3 letters · shape CVC  ·  "FTSE" · 4 letters · shape CCCV

Known mistypes of this pair

  • FTSE ← fftse · fste · ftes · ftsse · fttse · tfse

Frequently Asked Questions

Do "FES" and "FTSE" mean the same thing in a sentence?
No - they are not even the same part of speech. "FES" is a noun and "FTSE" a name, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "FES" or "FTSE" show up more?
"FTSE" is the more common of the two: it sits at frequency rank #38,851 in our English list, against #39,812 for "FES". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "FES" vs "FTSE" is on the table, pick a follow-up below.

  • Full dictionary entry for "FES" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "FTSE" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #24,042 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "FES" and "FTSE" also get mixed up with nearby pairs, the highest-scored neighbour is "FES vs foh". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #24,042 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list