dobvsdumbWhat's the difference?

Quick tell: dob is a verb, dumb is an adjective, so they fill different roles in a sentence.

Which to use

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

#44,170
“dob” frequency rank
#2,788
“dumb” frequency rank
46958
confusion score

Side-by-Side Comparison

Feature dob dumb
Definition To report a person to someone in authority for a wrongdoing. (For transitive forms see dob in, dob on.) Unable to speak; lacking power of speech.

Where the eye mixes dob and dumb

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
dob
4 ch
dumb

Look-alike desk: dob vs dumb

These two trip readers on the page rather than in the ear: dob is /dɑb/ while dumb is /dʌm/. 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 (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 46958, derived from the frequency rank of both members and their visual similarity.

dob is recorded at frequency rank #44,170, classified as averb, pronounced /dɑb/. dumb is at rank #2,788, tagged as anadj, pronounced /dʌm/.

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 46958, this pair ranks #206,924 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of dob vs dumb

Shared letters: bd. Private to "dob": o. Private to "dumb": mu.

"dob" · 3 letters · shape CVC  ·  "dumb" · 4 letters · shape CVCC

Known mistypes of this pair

  • dumbddumb · dmub · dubm · dumbb · dummb · udmb

Frequently Asked Questions

Is swapping "dob" for "dumb" ever safe?
No - they are not even the same part of speech. "dob" is a verb and "dumb" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "dob" or "dumb" show up more?
"dumb" is the more common of the two: it sits at frequency rank #2,788 in our English list, against #44,170 for "dob". 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 "dob" and "dumb" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "dob" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "dumb" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #206,924 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "dob" and "dumb" also get mixed up with nearby pairs, the highest-scored neighbour is "dob vs dox". 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 #206,924 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