Which to use
“bad” is an adjective and “blah” is a noun - they look or sound alike but fill different roles in a sentence.
- #8,759
- “bad” frequency rank
- #27,112
- “blah” frequency rank
- 35871
- confusion score
Side-by-Side Comparison
| Feature | bad | blah |
|---|---|---|
| Definition | Malo | Pamplinas, sandeces. |
Where the eye mixes bad and blah
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses bad with blah
These two trip readers on the page rather than in the ear: bad is /bæd/ while blah is /blɑː/. 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 noun), which is usually the fastest check. Our composite confusion score for this pair is 35871, derived from the frequency rank of both members and their visual similarity.
bad is recorded at frequency rank #8,759, classified as anadj, pronounced /bæd/. blah is at rank #27,112, tagged as anoun, pronounced /blɑː/.
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 35871, this pair ranks #183,724 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of bad vs blah
Shared letters: ab. Private to "bad": d. Private to "blah": hl.
"bad" · 3 letters · shape CVC · "blah" · 4 letters · shape CCVC
Known mistypes of this pair
- blah ← balh · bblah · blahh · blha · bllah · lbah · vlah
Frequently Asked Questions
Do "bad" and "blah" mean the same thing in a sentence?
Frequency check: "bad" vs "blah" - which ranks higher?
After this comparison
Eye-level mix-up between "bad" and "blah" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "bad" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "blah" - compare definitions side by side with the headword page. Word entry
- This pair ranks #183,724 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "bad" and "blah" also get mixed up with nearby pairs, the highest-scored neighbour is "Baal vs blah". 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 #183,724 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.