deadvsdudWhat's the difference?

Quick tell: dead is a adjective, dud is a noun, so they fill different roles in a sentence.

Which to use

“dead” is an adjective and “dud” is a noun - they look or sound alike but fill different roles in a sentence.

#652
“dead” frequency rank
#29,251
“dud” frequency rank
29903
confusion score

Side-by-Side Comparison

Feature dead dud
Definition No longer living; deceased. (Also used as a noun.) A device or machine that is useless because it does not work properly or has failed to work, such as a bomb, or explosive projectile.

Where the eye mixes dead and dud

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

4 ch
dead
3 ch
dud

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: dead is /dɛd/ while dud is /dʌd/. 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 29903, derived from the frequency rank of both members and their visual similarity.

dead is recorded at frequency rank #652, classified as anadj, pronounced /dɛd/. dud is at rank #29,251, tagged as anoun, pronounced /dʌd/.

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 29903, this pair ranks #359,062 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of dead vs dud

Shared letters: d. Private to "dead": ae. Private to "dud": u.

"dead" · 4 letters · shape CVVC  ·  "dud" · 3 letters · shape CVC

Known mistypes of this pair

  • deaddaed · ddead · deadd · deda · edad

Frequently Asked Questions

Can "dead" and "dud" be used interchangeably?
No - they are not even the same part of speech. "dead" is an adjective and "dud" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "dead" or "dud"?
"dead" is the more common of the two: it sits at frequency rank #652 in our English list, against #29,251 for "dud". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "dead" and "dud". Here's where to go from here.

  • Full dictionary entry for "dead" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "dud" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #359,062 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "dead" and "dud" also get mixed up with nearby pairs, the highest-scored neighbour is "dox vs dud". 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

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list