Which to use
“basis” and “bast” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #1,626
- “basis” frequency rank
- #47,486
- “bast” frequency rank
- 49112
- confusion score
Side-by-Side Comparison
| Feature | basis | bast |
|---|---|---|
| Definition | A physical base or foundation. | Inner bark of a tree from which rope is traditionally made. |
Where the eye mixes basis and bast
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between basis and bast
A purely visual mix-up. basis (/ˈbeɪ.sɪs/) and bast (/bɑːst/) 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 49112, 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/. bast is at rank #47,486, tagged as anoun, pronounced /bɑːst/.
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 49112, this pair ranks #186,712 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of basis vs bast
Shared letters: abs. Private to "basis": i. Private to "bast": t.
"basis" · 5 letters · shape CVCVC · "bast" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "basis" for "bast" ever safe?
In ordinary English text, does "basis" or "bast" show up more?
After this comparison
Eye-level mix-up between "basis" and "bast" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "basis" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "bast" - compare definitions side by side with the headword page. Word entry
- This pair ranks #186,712 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "basis" and "bast" also get mixed up with nearby pairs, the highest-scored neighbour is "bast vs BFS". 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 #186,712 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.