Many English learners find it challenging to tell the difference between the vowels /uː/ and /ʊ/. These two sounds may seem similar, but they can completely change the meaning of a word. For example, pool (/puːl/) and pull (/pʊl/) are pronounced differently and refer to very different things. Mastering this contrast will help you speak more clearly, avoid misunderstandings, and sound more natural when communicating in English.
How to Distinguish the /uː/and /ʊ/ Sounds?
What are /uː/ and /ʊ/?
| Feature | /uː/ | /ʊ/ |
|---|---|---|
| Sound Type | Long vowel | Short vowel |
| Length | Longer and more tense | Shorter and more relaxed |
| Lip Shape | Lips are more rounded and pushed forward | Lips are less rounded |
| Example Words | /uː/ in food, blue, school | /ʊ/ in book, foot, good |
| Spelling Patterns | Often spelled as “oo,” “ue,” “u,” “ew” | Often spelled as “u,” “oo,” “o” |
How to Pronounce /uː/ and /ʊ/
✅ /uː/ – Think of a long, steady ooo sound:
- Lips are rounded and tense.
- Tongue is raised high and pulled back.
- Example: moon /muːn/
Notice in the diagram how the teeth and lips meet for /uː/.
Listen to this recording to hear the /uː/ sound in “boot.”
✅ /ʊ/ – A short, quick uh sound (not as open as /ʌ/):
- Lips are rounded but relaxed.
- Tongue is high but more central.
- Example: book /bʊk/
Look at the picture to see how wide your jaw should drop for /ʊ/.
Press play to catch the /ʊ/ sound in “put.”
Common Examples of /uː/ and /ʊ/
| /uː/ (Word + IPA) | /ʊ/ (Word + IPA) |
| pool /puːl/ | pull /pʊl/ |
| fool /fuːl/ | full /fʊl/ |
| Luke /luːk/ | look /lʊk/ |
| boot /buːt/ | book /bʊk/ |
| food /fuːd/ | foot /fʊt/ |
| hoot /huːt/ | hook /hʊk/ |
| suit /suːt/ | soot /sʊt/ |
| shoot /ʃuːt/ | shook /ʃʊk/ |
| mood /muːd/ | good /ɡʊd/ (near-minimal) |
| rude /ruːd/ | rook /rʊk/ |
| wooed /wuːd/ | wood /wʊd/ |
| cooed /kuːd/ | could /kʊd/ |
| soon /suːn/ | sun /sʊn/ (near-minimal) |
| troop /truːp/ | took /tʊk/ |
| room /ruːm/ | rook /rʊk/ |
| bloom /bluːm/ | book /bʊk/ (near-minimal) |
| glue /ɡluː/ | good /ɡʊd/ (near-minimal) |
| brute /bruːt/ | brook /brʊk/ |
| loose /luːs/ | look /lʊk/ |
| stoop /stuːp/ | stood /stʊd/ |
/uː/ and /ʊ/ Minimal Pairs List
| /uː/ (Word + IPA) | /ʊ/ (Word + IPA) |
| fool /fuːl/ | full /fʊl/ |
| pool /puːl/ | pull /pʊl/ |
| Luke /luːk/ | look /lʊk/ |
| brood /bruːd/ | brood (same) /brʊd/ (note: rarely minimal) |
| food /fuːd/ | foot /fʊt/ |
| boot /buːt/ | book /bʊk/ |
| cool /kuːl/ | could /kʊd/ (near-minimal) |
| mood /muːd/ | good /ɡʊd/ (near-minimal) |
| hoot /huːt/ | hook /hʊk/ |
| shoot /ʃuːt/ | shook /ʃʊk/ |
| loot /luːt/ | look /lʊk/ |
| wooed /wuːd/ | wood /wʊd/ |
| cooed /kuːd/ | could /kʊd/ |
| soon /suːn/ | sun /sʊn/ (near-minimal) |
| rude /ruːd/ | rook /rʊk/ |
| suit /suːt/ | soot /sʊt/ |
| troop /truːp/ | took /tʊk/ |
| cruise /kruːz/ | could /kʊd/ (near-minimal) |
| prune /pruːn/ | put /pʊt/ |
| room /ruːm/ | rook /rʊk/ |
| doom /duːm/ | book /bʊk/ (near-minimal) |
| gloom /ɡluːm/ | good /ɡʊd/ (near-minimal) |
| tooth /tuːθ/ | took /tʊk/ |
| tool /tuːl/ | took /tʊk/ |
| school /skuːl/ | skook /skʊk/ (rare/near-minimal) |
| drool /druːl/ | brook /brʊk/ (near-minimal) |
| bloom /bluːm/ | book /bʊk/ (near-minimal) |
| plume /pluːm/ | pull /pʊl/ |
| groom /ɡruːm/ | good /ɡʊd/ (near-minimal) |
| stoop /stuːp/ | stood /stʊd/ |
| flute /fluːt/ | foot /fʊt/ |
| brute /bruːt/ | brook /brʊk/ |
| route /ruːt/ | rook /rʊk/ |
| who’d /huːd/ | hood /hʊd/ |
| mood /muːd/ | mud /mʊd/ (near-minimal) |
| crude /kruːd/ | could /kʊd/ |
| chew /tʃuː/ | took /tʊk/ |
| sue /suː/ | soot /sʊt/ |
| woo /wuː/ | wood /wʊd/ |
| you /juː/ | yook /jʊk/ (rare/near-minimal) |
| blue /bluː/ | book /bʊk/ |
| true /truː/ | took /tʊk/ |
| crew /kruː/ | crook /krʊk/ |
| grew /ɡruː/ | good /ɡʊd/ (near-minimal) |
| glue /ɡluː/ | gook /ɡʊk/ (rare/near-minimal) |
| flew /fluː/ | foot /fʊt/ |
| brew /bruː/ | brook /brʊk/ |
| fluke /fluːk/ | book /bʊk/ (near-minimal) |
| spook /spuːk/ | spook /spʊk/ (some accents) |
| loop /luːp/ | look /lʊk/ |
| moot /muːt/ | mutt /mʊt/ (near-minimal) |
| shoo /ʃuː/ | shook /ʃʊk/ |
| droop /druːp/ | brook /brʊk/ (near-minimal) |
| root /ruːt/ | rook /rʊk/ |
| boost /buːst/ | book /bʊk/ (near-minimal) |
| loose /luːs/ | look /lʊk/ |