V4vsVXWhich spelling fits?

Which to use

“V4” and “VX” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#35,574
“V4” frequency rank
#40,510
“VX” frequency rank
76084
confusion score

Side-by-Side Comparison

Feature V4 VX
Definition The four Visegrád countries of Poland, Hungary, Slovakia and the Czech Republic, who have a European political alliance. The nerve agent O-ethyl S-[2-(diisopropylamino)ethyl] methylphosphonothioate.

Letter map: V4 vs VX

Shared letters muted; letters that set V4 and VX apart highlighted. Shared run: 1. V4 runs 1 letters (C) against VX's 2 (CC) - the length gap alone is often enough to separate them once you know to check it.

2 ch
V4
2 ch
VX

Pair insight - V4 / VX

V4 and VX are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by a single letter - 4 in “V4” becomes x in “VX”. Our composite confusion score for this pair is 76084, derived from the frequency rank of both members and their visual similarity.

V4 is recorded at frequency rank #35,574, classified as aname. VX is at rank #40,510, tagged as aname.

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 76084, this pair ranks #31,118 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of V4 vs VX

Shared letters: v. Private to "V4": -. Private to "VX": x.

"V4" · 1 letters · shape C  ·  "VX" · 2 letters · shape CC

Frequently Asked Questions

Is swapping "V4" for "VX" ever safe?
No. They differ by a single letter - 4 in “V4” becomes x in “VX”, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Which is more common, "V4" or "VX"?
"V4" is the more common of the two: it sits at frequency rank #35,574 in our English list, against #40,510 for "VX". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "V4" and "VX".

  • Full dictionary entry for "V4" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "VX" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #31,118 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "V4" and "VX" also get mixed up with nearby pairs, the highest-scored neighbour is "VH vs VX". Nearby pair

Confusion rank #31,118 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