basedvsbestedTell them apart

Quick tell: based is a adjective, bested is a verb, so they fill different roles in a sentence.

Which to use

“based” is an adjective and “bested” is a verb - they look or sound alike but fill different roles in a sentence.

#285
“based” frequency rank
#40,581
“bested” frequency rank
40866
confusion score

Side-by-Side Comparison

Feature based bested
Definition Founded on; having a basis; often used in combining forms. simple past and past participle of best

Where the eye mixes based and bested

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

5 ch
based
6 ch
bested

Look-alike desk: based vs bested

These two trip readers on the page rather than in the ear: based is /beɪst/ while bested is /ˈbɛstɪd/. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 40866, derived from the frequency rank of both members and their visual similarity.

based is recorded at frequency rank #285, classified as anadj, pronounced /beɪst/. bested is at rank #40,581, tagged as averb, pronounced /ˈbɛstɪd/.

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 40866, this pair ranks #263,708 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of based vs bested

Shared letters: bdes. Private to "based": a. Private to "bested": t.

"based" · 5 letters · shape CVCVC  ·  "bested" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • basedabsed · baesd · basde · basedd · bassed · bbased · bsaed
  • bestedbbested · besetd · bessted · bestde · bestedd · bestted · betsed · bseted

Frequently Asked Questions

Do "based" and "bested" mean the same thing in a sentence?
No - they are not even the same part of speech. "based" is an adjective and "bested" a verb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "based" vs "bested" - which ranks higher?
"based" is the more common of the two: it sits at frequency rank #285 in our English list, against #40,581 for "bested". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "based" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "bested" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #263,708 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "based" and "bested" also get mixed up with nearby pairs, the highest-scored neighbour is "bested vs bestie". 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 #263,708 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