PRACTICE LIBRARY · ABOUT 5 MINUTES · BRITISH RP
The RP BATH vowel: which words get the long “ah”, and which don't
In RP, bath, glass and dance use the long, open vowel of father. But plenty of words that look similar keep a short a. Learn which is which by ear, so the accent doesn't tip into a caricature.
This is called the trap–bath split. General American uses the same short vowel in cat and bath. RP splits them: a set of common words takes a long /ɑː/, and the rest stay short.
The reference is an AI voice with a fairly light, natural RP. You'll need about five minutes and your phone's voice recorder. This page doesn't record you.
Start the exercise0:00–1:00 · THE VOWEL
It's the vowel in “father”
/ɑː/ is long and open, with the tongue low and pulled back. RP uses the same vowel in father, car and park. Stretching your usual short a won't get you there: the vowel itself has to change.
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Before you go on, record yourself saying “I had a bath after dance class.” once in your everyday voice. Keep it for the end.
1:00–2:30 · THE LONG WORDS
Where you'll find it
BATH words usually have the A before f, s, th, or n plus another consonant.
after · glass · last · path · dance · plant · answer
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- Play each word and repeat it. Keep your jaw relaxed and let the vowel sit low; there's no need to force your mouth wide.
- Say father, then after. The first vowel should be identical. Do the same with father and glass, then father and dance.
2:30–3:30 · THE SHORT ONES
Not every A gets stretched
The spelling pattern is only a guide. Plenty of words that fit it keep the short vowel in RP: gas, mass, maths, hand, stand. Everyday words like family, camera and happy are short too.
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- Play family and camera. The first vowel is short and quick. RP's short a is a touch more open than the American one, but it never stretches.
Rule of thumb for performers: if you're not sure, keep it short. A missed BATH word sounds like a slightly American RP. A stretched short word (“fahmily”) sounds like a parody.
3:30–4:00 · EAR TEST
Long or short?
Train your ear
Press play to hear one of the words above, then decide whether its stressed vowel was the long BATH vowel or the short one.
You can also use the labeled clips above without this check.
4:00–5:00 · TWO LINES
Long and short side by side
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- Before playing, go through “Can't grasp the task at hand” and mark each A long or short.
- Play it and check. Can't, grasp and task are long. Hand stays short, and so does the little at.
- Now “I had a bath after dance class.” Had is short; bath, after, dance and class are all long.
- Record that sentence again and play it after your everyday take. Listen only for the vowels. Write down one word to work on next time.
Variation matters. Northern English accents keep the short vowel in BATH words; the long vowel belongs to RP and much of southern England. A few words, such as plastic, vary even among RP speakers.
KEEP GOING IN THE APP
Practise it with feedback
The BATH vowel is the second lesson on Accentuate's British RP path, right after non-rhotic R. It runs from words to phrases to full sentences, and you can record each one and get directional feedback.
Feedback is directional. A score isn't a precise diagnosis of one sound, or proof that you sound convincingly RP.