a'svsaxisWhich spelling fits?

Which to use

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

#15,090
“a's” frequency rank
#6,869
“axis” frequency rank
21959
confusion score

Side-by-Side Comparison

Feature a's axis
Definition plural of the letter a An imaginary line around which an object spins (an axis of rotation) or is symmetrically arranged (an axis of symmetry).

Where the eye mixes a's and axis

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

3 ch
a's
4 ch
axis

Look-alike desk: a's vs axis

A purely visual mix-up. a's (/ˈeɪz/) and axis (/ˈæksɪs/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 21959, derived from the frequency rank of both members and their visual similarity.

a's is recorded at frequency rank #15,090, classified as anoun, pronounced /ˈeɪz/. axis is at rank #6,869, tagged as anoun, pronounced /ˈæksɪs/.

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 21959, this pair ranks #420,105 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of a's vs axis

Shared letters: as. Private to "a's": -. Private to "axis": ix.

"a's" · 2 letters · shape VC  ·  "axis" · 4 letters · shape VCVC

Known mistypes of this pair

  • axisaixs · axiss · axsi · axxis · xais

Frequently Asked Questions

Do "a's" and "axis" mean the same thing in a sentence?
No. They are said differently (/ˈeɪz/ versus /ˈæksɪs/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "a's" vs "axis" - which ranks higher?
"axis" is the more common of the two: it sits at frequency rank #6,869 in our English list, against #15,090 for "a's". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "a's" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "axis" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #420,105 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "a's" and "axis" also get mixed up with nearby pairs, the highest-scored neighbour is "a's vs amb". 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 #420,105 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