If you want more information on the photos in this video, which have parts of the mouth drawn in, see this video on the parts of the mouth.

How to make this sound:

Video Text:

The 'oo' as in 'boo' vowel sound. To make this sound, the mid-back part of the tongue raises quite a bit towards the roof of the mouth, oo. The front of the tongue is lightly touching behind the bottom of the front teeth or pulled slightly further back so it's not quite touching, but in that position. Oo. You can see of course that the lips have a very tight circle in this position, oo. So the corners come in and cause that to round. This is a back vowel, it feels like it's coming more from here in the face. Oo, boo.

Here is the 'oo' as in 'boo' vowel sound on the right compared with the mouth at rest on the left. You can see the corners of the lips are pushed foward to round the lips. This pushes the center part of the lips away from the face. And here are the inside parts of the mouth drawn in. As with all vowels, the soft palate is raised. More importantly, note the tongue position: it is raised very high in the back. The tip of the tongue, however, is still touching the backside of the bottom front teeth.

Sample words: spoon, tool, food. Sample sentence: Who's in the mood for fruit? Now we'll see this sample sentence up close and in slow motion, both straight on and from an angle, so you can really study how this sound is made.

Who, the mouth forms the oo sound. It's spelled with a W but the two sounds are hh, the H and oo, the 'oo' as in 'boo'. Who's, the teeth come together to make the zz sound. In the, tongue comes through the teeth. Mood, another 'oo' vowel sound where the lips round, but the bottom lip begins already to move up to make the f sound, for, and again for the ff fruit, which has the 'oo' as in 'boo' vowel sound. And the lips come in and round. And the teeth come together - tt - to make the T sound. And now from the angle. Oo, the tight circle of the lips, who's. Teeth come together to make that Z sound, In the, lips come together for the M. And then the 'oo' as in 'boo' vowel, mood. And the bottom lip moves up to make the F, for, and one more time, fruit, with the 'oo' as in 'boo' vowel sound. The lips again make the tight circle and the teeth come together to make the T in fruit.

International Phonetic Alphabet symbol: []

This sound exists in many languages. See Wikipedia's page on it.

Miss the old sound video? See it here.