FTPvsFTSEWhich spelling fits?

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

Which to use

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

#28,555
“FTP” frequency rank
#38,851
“FTSE” frequency rank
67406
confusion score

Side-by-Side Comparison

Feature FTP FTSE
Definition free-to-play Financial Times and Stock Exchange.

Where the eye mixes FTP and FTSE

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
FTP
4 ch
FTSE

Visual trap between FTP and FTSE

These two trip readers on the page rather than in the ear: FTP is /ˌɛf tiː ˈpiː/ while FTSE is /ˈfʊt.si/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs name), which is usually the fastest check. Our composite confusion score for this pair is 67406, derived from the frequency rank of both members and their visual similarity.

FTP is recorded at frequency rank #28,555, classified as anadj, pronounced /ˌɛf tiː ˈpiː/. 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 67406, this pair ranks #63,495 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of FTP vs FTSE

Shared letters: ft. Private to "FTP": p. Private to "FTSE": es.

"FTP" · 3 letters · shape CCC  ·  "FTSE" · 4 letters · shape CCCV

Known mistypes of this pair

  • FTSEfftse · fste · ftes · ftsse · fttse · tfse

Frequently Asked Questions

Can "FTP" and "FTSE" be used interchangeably?
No - they are not even the same part of speech. "FTP" is an adjective and "FTSE" a name, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "FTP" or "FTSE"?
"FTP" is the more common of the two: it sits at frequency rank #28,555 in our English list, against #38,851 for "FTSE". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "FTP" 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 #63,495 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "FTP" and "FTSE" also get mixed up with nearby pairs, the highest-scored neighbour is "fie vs FTSE". 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 #63,495 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