vastvsvisWhich spelling fits?

Quick tell: vast is a adjective, vis is a noun, so they fill different roles in a sentence.

Which to use

“vast” is an adjective and “vis” is a noun - they look or sound alike but fill different roles in a sentence.

#3,096
“vast” frequency rank
#16,614
“vis” frequency rank
19710
confusion score

Side-by-Side Comparison

Feature vast vis
Definition Very large or wide (literally or figuratively). Force; energy; might; power.

Where the eye mixes vast and vis

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

4 ch
vast
3 ch
vis

Look-alike desk: vast vs vis

These two trip readers on the page rather than in the ear: vast is /vɑːst/ while vis is /vɪs/. 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 noun), which is usually the fastest check. Our composite confusion score for this pair is 19710, derived from the frequency rank of both members and their visual similarity.

vast is recorded at frequency rank #3,096, classified as anadj, pronounced /vɑːst/. vis is at rank #16,614, tagged as anoun, pronounced /vɪs/.

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 19710, this pair ranks #436,259 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of vast vs vis

Shared letters: sv. Private to "vast": at. Private to "vis": i.

"vast" · 4 letters · shape CVCC  ·  "vis" · 3 letters · shape CVC

Known mistypes of this pair

  • vastavst · vasst · vastt · vats · vsat · vvast

Frequently Asked Questions

Can "vast" and "vis" be used interchangeably?
No - they are not even the same part of speech. "vast" is an adjective and "vis" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "vast" or "vis" show up more?
"vast" is the more common of the two: it sits at frequency rank #3,096 in our English list, against #16,614 for "vis". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "vast" and "vis" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "vast" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "vis" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #436,259 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "vast" and "vis" also get mixed up with nearby pairs, the highest-scored neighbour is "VH vs vis". 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 #436,259 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