unreadablevsunreliableWhich spelling fits?

Which to use

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

#46,244
“unreadable” frequency rank
#14,445
“unreliable” frequency rank
60689
confusion score

Side-by-Side Comparison

Feature unreadable unreliable
Definition Not written clearly enough to be deciphered. Not reliable.

Letter map: unreadable vs unreliable

Shared letters muted; letters that set unreadable and unreliable apart highlighted. Shared run: 8. unreadable (VCCVVCVCCV) and unreliable (VCCVCVVCCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

10 ch
unreadable
10 ch
unreliable

Pair insight - unreadable / unreliable

unreadable and unreliable are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 60689, derived from the frequency rank of both members and their visual similarity.

unreadable is recorded at frequency rank #46,244, classified as anadj. unreliable is at rank #14,445, tagged as anadj, pronounced /ˌʌn.ɹɪˈlaɪ.ə.bl̩/.

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 60689, this pair ranks #98,675 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of unreadable vs unreliable

Shared letters: abelnru. Private to "unreadable": d. Private to "unreliable": i.

"unreadable" · 10 letters · shape VCCVVCVCCV  ·  "unreliable" · 10 letters · shape VCCVCVVCCV

Known mistypes of this pair

  • unreadable ← nureadable · uneradable · unnreadable · unraedable · unreaadble · unreadabble · unreadabel · unreadablle
  • unreliable ← nureliable · unerliable · unnreliable · unreilable · unrelaible · unreliabble · unreliabel · unreliablle

Frequently Asked Questions

Is swapping "unreadable" for "unreliable" ever safe?
No. They share most of their letters but differ in 2 positions, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Frequency check: "unreadable" vs "unreliable" - which ranks higher?
"unreliable" is the more common of the two: it sits at frequency rank #14,445 in our English list, against #46,244 for "unreadable". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Done with this confusable. These links stay specific to "unreadable" and "unreliable".

  • Full dictionary entry for "unreadable" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "unreliable" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #98,675 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "unreadable" and "unreliable" also get mixed up with nearby pairs, the highest-scored neighbour is "unreachable vs unreadable". 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 #98,675 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