A dorsal sound is a sound that is pronounced by the back of the tongue approaching or touching the palate or pharynx.

A central vowel is a vowel that is pronounced in the central part of the tongue.

The central vowels in Japanese are 'a', 'e', 'o'.

Front vowels are pronounced using the front part of the tongue.

A front vowel is a vowel that is articulated with the front part of the tongue.

He cautioned not to speak ill of others, saying, 'Illness enters by the mouth, and disaster does not come out of it.'

I use mouthwash every day after brushing my teeth.

There was a major outbreak of foot-and-mouth disease in Japan in 2000.

As a miko acting as a medium, she conveys the words of the gods.

He faltered due to nervousness.