ou /u/ vs u /y/, and oi /wa/
Good news for German speakers: you already have both sounds. English speakers struggle here; you do not.
ou = /u/, like German u
The spelling ou is the sound of German gut or Uhr, English food: lips rounded and pushed forward.
- vous /vu/, nous /nu/, tout /tu/, pour /puʁ/, où /u/
u = /y/, like German ü
The single letter u is always /y/, exactly the German ü in über or Tür. Never read it as English u or German u.
- tu /ty/, sur /syʁ/, une /yn/, le bureau /byʁo/, la musique /myzik/
Minimal pairs: listen and repeat
| /u/ (ou) | /y/ (u) |
|---|---|
| tout /tu/ (all) | tu /ty/ (you) |
| la roue /ʁu/ (wheel) | la rue /ʁy/ (street) |
| vous /vu/ (you) | vu /vy/ (seen) |
| dessous /dəsu/ (under) | dessus /dəsy/ (on top) |
| le cou /ku/ (neck) | le cul /ky/ (vulgar: backside) |
The last pair is a good reason to practise.
Before another vowel, ou turns into a short /w/ and u into a short /ɥ/ (a quick ü gliding into the next vowel): oui /wi/, jouer /ʒwe/, but je suis /sɥi/, la nuit /nɥi/.
oi = /wa/
The spelling oi always sounds /wa/, like English wa in water: never German eu or oi.
- moi /mwa/, toi /twa/, trois /tʁwa/, le soir /swaʁ/, noir /nwaʁ/, pourquoi /puʁkwa/, voilà /vwala/, le croissant /kʁwasɑ̃/
With oy before a vowel you get /waj/: le voyage /vwajaʒ/, envoyer /ɑ̃vwaje/ (to send).
Trap for German readers: oin is nasal /wɛ̃/: le coin /kwɛ̃/ (corner), loin /lwɛ̃/ (far).