dvsdurTell them apart

Quick tell: d is a character, dur is an adjective, so they fill different roles in a sentence.

Which to use

“d” is a character and “dur” is an adjective - they look or sound alike but fill different roles in a sentence.

#327
“d” frequency rank
#39,793
“dur” frequency rank
40120
confusion score

Side-by-Side Comparison

Feature d dur
Definition The fourth letter of the English alphabet, called dee and written in the Latin script. Major; in the major mode.

Where the eye mixes d and dur

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

1 ch
d
3 ch
dur

Look-alike desk: d vs dur

These two trip readers on the page rather than in the ear: d is /diː/ while dur is /duːɹ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “d” sits inside “dur”, and the parts of speech differ too (character vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 40120, derived from the frequency rank of both members and their visual similarity.

d is recorded at frequency rank #327, classified as acharacter, pronounced /diː/. dur is at rank #39,793, tagged as anadj, pronounced /duːɹ/.

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 40120, this pair ranks #270,513 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of d vs dur

Shared letters: d. Private to "d": -. Private to "dur": ru.

"d" · 1 letters · shape C  ·  "dur" · 3 letters · shape CVC

Frequently Asked Questions

Can "d" and "dur" be used interchangeably?
No - they are not even the same part of speech. "d" is a character and "dur" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "d" or "dur" show up more?
"d" is the more common of the two: it sits at frequency rank #327 in our English list, against #39,793 for "dur". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "d" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "dur" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #270,513 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "d" and "dur" also get mixed up with nearby pairs, the highest-scored neighbour is "dox vs dur". Nearby pair

Confusion rank #270,513 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