duvsdusWhat's the difference?

Quick tell: du is a article, dus is an adjective, so they fill different roles in a sentence.

Which to use

“du” is an article and “dus” is an adjective - they look or sound alike but fill different roles in a sentence.

#17
“du” frequency rank
#9,817
“dus” frequency rank
9834
confusion score

Side-by-Side Comparison

Feature du dus
Definition Une quantité indéfinie de. Note d’usage : Utilisé avec un nom indénombrable. Masculin pluriel de dû.

Same sound, different letters: du vs dus

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 2 letters.

2 ch
du
3 ch
dus

Spelling & Dictionary Insight

Say them out loud and nothing separates them: du and dus carry the same recorded pronunciation, \dy\. Grammar is what tells them apart: one is anarticle, the other anadjective, so most sentences will only accept one of them. They differ by 1 extra letter(s) - “du” sits inside “dus”. Our composite confusion score for this pair is 9834, derived from the frequency rank of both members and their visual similarity.

du is recorded at frequency rank #17, classified as anarticle, pronounced \dy\. dus is at rank #9,817, tagged as anadj, pronounced \dy\.

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 9834, this pair ranks #415,224 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of du vs dus

Shared letters: du. Private to "du": -. Private to "dus": s.

"du" · 2 letters · shape CV  ·  "dus" · 3 letters · shape CVC

Frequently Asked Questions

Can "du" and "dus" be used interchangeably?
No - they are not even the same part of speech. "du" is an article and "dus" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "du" or "dus"?
"du" is the more common of the two: it sits at frequency rank #17 in our French list, against #9,817 for "dus". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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

Source: FrequencyWords open word-frequency list