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ɜː (work) is muffled and flat. ɔː (walk) is rounded and deeper.
This can be trained
Hearing work and walk apart is a skill, not a talent. Lambacher and colleagues (2002) trained 35 Japanese learners for 6 weeks on five English vowels, including the ones in work and walk. Compared with learners who didn't train, they identified all five vowels better afterwards, and for four of the five, their pronunciation improved too.
Studies: Lambacher et al. 2002 · Lambacher et al. 2005
Easy
7 pairsShort, common words. For consonants, the sound is at the start of the word.
- work · walk
- word · ward
- worm · warm
- firm · form
- bird · board
- burn · born
- turn · torn
Medium
2 pairsClusters, word endings or less common words.
- shirt · short
- curse · course
Hard
1 pairsMiddle of the word and longer words.
- worker · walker
How to hear the difference between work and walk
Listen for the "er". Work has it from the first moment to the last. Walk has none: its vowel is a round "aw" or an open "ah". The skill is hearing whether the "er" is there, every time, in every voice.
How ɜː and ɔː are made
For ɜː, the mouth is half closed, the lips are flat and the tongue sits in the middle. In American English, the tongue also bunches up or curls back for an R, which gives work its muffled "er" from start to finish.
For ɔː, the jaw drops further and the lips push forward into a round shape, with the tongue pulled back. British speakers keep the lips rounded and the vowel long, close to a Japanese オー (oo). Many American speakers barely round their lips and say walk with the open "ah" of hot.
Why do work and walk sound backwards to Japanese speakers?
Unlike most pairs, katakana does spell these two differently: work is ワーク (waaku) and walk is ウォーク (wooku). The trouble is that neither spelling matches English. ワーク has no "er" in it, and because many Americans say walk with an open "ah", their walk sounds closer to ワーク than work does. That's why so many Japanese learners feel the two are pronounced backwards.
Katakana isn't consistent here either. Word is ワード (waado), and so is the ward in wardrobe, ワードローブ (waadoroobu).
The real difference is the "er" of ɜː. Japanese has no vowel like it, so the ear swaps in a plain "aa" and stops listening for it.
What to listen for
Listen for the "er". Work, word and worm carry it all the way through. Walk has no R at all, so any "er" means work.
Warm, ward, short and born do have an R in American English, but it only arrives at the end of the vowel. Short starts with a round "aw" and then turns into R, while shirt is "er" from the start. Listen to the first moment of the vowel.
British voices usually drop the R in all of these words, so listen to the lips instead: ɜː is flat and unrounded, ɔː is round and deep, like a long オー.
Worker and walker follow the same rule. Only the first vowel differs, and both end in the same "er".
When it matters: meaning
Mix them up and you get a different word. A worm is a creature in the soil, warm is a temperature. A shirt is clothing, short is a length. A word is something you say, a ward is part of a hospital or a city. Turn means to rotate, torn means ripped. A curse is a spell or a swear word, a course is a class or a route.
"I walk to work" uses both, and "I'm going to work" and "I'm going to walk" are two different plans.
How to practice hearing work and walk
Listen to American and British voices alike. Americans say walk in many ways, from a round "aw" to an open "ah", so hearing many speakers teaches you what all of them share: no "er".
Check every answer the moment you give it, and practice in short bursts. Start with work and walk or worm and warm, then shirt and short or curse and course, then worker and walker.
The ɜː in work is the same vowel as in heard, which learners also confuse with the ɑː in hard. TellApart has heard · hard as a collection too, and training both helps you pin down ɜː itself.
The listening helps your speaking. In the Lambacher study, the learners never practiced speaking, yet American listeners preferred their pronunciation after training for four of the five vowels. Little and often works better than long, rare sessions, whatever your pace.
Related sound pairs
How the app uses this list
Each session plays 20 words from your current level, each one spoken by a different voice. Score 17/20 or better and the next level opens.
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