devsDSMWhat's the difference?

Quick tell: de is a preposition, DSM is a name, so they fill different roles in a sentence.

Which to use

“de” is a preposition and “DSM” is a name - they look or sound alike but fill different roles in a sentence.

#1
“de” frequency rank
#37,767
“DSM” frequency rank
37768
confusion score

Side-by-Side Comparison

Feature de DSM
Definition Marque un ablatif. Mot indiquant la provenance, l’origine ^([note 1]). Manuel classifiant les troubles mentaux, pour un usage statistique, expérimental, de diagnostic ou d’expertise médico-légale.

Where the eye mixes de and DSM

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

2 ch
de
3 ch
DSM

Look-alike desk: de vs DSM

These two trip readers on the page rather than in the ear: de is \də\ while DSM is \de.ɛs.ɛm\. 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 (preposition vs name), which is usually the fastest check. Our composite confusion score for this pair is 37768, derived from the frequency rank of both members and their visual similarity.

de is recorded at frequency rank #1, classified as aprep, pronounced \də\. DSM is at rank #37,767, tagged as aname, pronounced \de.ɛs.ɛm\.

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 37768, this pair ranks #260,065 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of de vs DSM

Shared letters: d. Private to "de": e. Private to "DSM": ms.

"de" · 2 letters · shape CV  ·  "DSM" · 3 letters · shape CCC

Frequently Asked Questions

Do "de" and "DSM" mean the same thing in a sentence?
No - they are not even the same part of speech. "de" is a preposition and "DSM" a name, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "de" or "DSM" show up more?
"de" is the more common of the two: it sits at frequency rank #1 in our French list, against #37,767 for "DSM". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "de" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "DSM" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #260,065 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "de" and "DSM" also get mixed up with nearby pairs, the highest-scored neighbour is "DCI vs DSM". Nearby pair

Confusion rank #260,065 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list