basis vs biases, What's the Difference?

Which to use

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

#1,626
“basis” frequency rank: #19,029
“biases” frequency rank: 20655
confusion score

Side-by-Side Comparison

Feature	basis	biases
Definition	A physical base or foundation.	plural of bias

Where the eye mixes basis and biases

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

5 ch

basis

6 ch

biases

Spelling & Dictionary Insight

A purely visual mix-up. basis (/ˈbeɪ.sɪs/) and biases (/ˈbaɪ.ə.sɪz/) 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 20655, derived from the frequency rank of both members and their visual similarity.

basis is recorded at frequency rank #1,626, classified as anoun, pronounced /ˈbeɪ.sɪs/. biases is at rank #19,029, tagged as anoun, pronounced /ˈbaɪ.ə.sɪz/.

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 20655, this pair ranks #429,605 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of basis vs biases

Shared letters: abis. Private to "basis": -. Private to "biases": e.

"basis" · 5 letters · shape CVCVC · "biases" · 6 letters · shape CVVCVC

Known mistypes of this pair

basis ← absis · baiss · basiss · bassi · bassis · bbasis · bsais
biases ← baises · bbiases · biaess · biasess · biasse · biasses · bisaes · ibases

Frequently Asked Questions

Can "basis" and "biases" be used interchangeably?

No. They are said differently (/ˈbeɪ.sɪs/ versus /ˈbaɪ.ə.sɪz/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Which is more common, "basis" or "biases"?

"basis" is the more common of the two: it sits at frequency rank #1,626 in our English list, against #19,029 for "biases". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "basis" and "biases". Here's where to go from here.

Full dictionary entry for "basis" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "biases" - compare definitions side by side with the headword page. Word entry
This pair ranks #429,605 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"basis" and "biases" also get mixed up with nearby pairs, the highest-scored neighbour is "bakes vs biases". 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

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.