basevsbiasesWhat's the difference?

Which to use

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

#942
“base” frequency rank
#19,029
“biases” frequency rank
19971
confusion score

Side-by-Side Comparison

Feature base biases
Definition Something from which other things extend; a foundation. plural of bias

Where the eye mixes base and biases

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

4 ch
base
6 ch
biases

Look-alike desk: base vs biases

A purely visual mix-up. base (/beɪs/) 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 2 letter(s) in length. Our composite confusion score for this pair is 19971, derived from the frequency rank of both members and their visual similarity.

base is recorded at frequency rank #942, classified as anoun, pronounced /beɪs/. 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 19971, this pair ranks #434,417 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of base vs biases

Shared letters: abes. Private to "base": -. Private to "biases": i.

"base" · 4 letters · shape CVCV  ·  "biases" · 6 letters · shape CVVCVC

Known mistypes of this pair

  • baseabse · baes · basse · bbase · bsae
  • biasesbaises · bbiases · biaess · biasess · biasse · biasses · bisaes · ibases

Frequently Asked Questions

Can "base" and "biases" be used interchangeably?
No. They are said differently (/beɪs/ versus /ˈbaɪ.ə.sɪz/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "base" or "biases"?
"base" is the more common of the two: it sits at frequency rank #942 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

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

  • Full dictionary entry for "base" 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 #434,417 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "base" 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

Confusion rank #434,417 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