Semivowel

In phonetics and phonology, a semivowel, also called a glide or semiconsonant, is a special kind of sound. It is very similar to a vowel sound, but it acts differently. Instead of being the main sound in a syllable, a semivowel helps to connect sounds at the edges of syllables.

In English, the letters y and w often make semivowel sounds. For example, in the word yes, the y sounds a bit like the ee in seen, and in west, the w sounds a bit like the oo in moon. These sounds are written as /j/ and /w/ in a special writing system called IPA.

The word glide can also be used for any sound that moves quickly between vowels, not just semivowels. Semivowels are important for understanding how words are pronounced and how sounds fit together in speech.

Classification

Semivowels are a special kind of sound that are similar to vowels but act as a bridge between syllables. They belong to a group of sounds called approximants. However, not all approximants are considered semivowels, and different experts might have slightly different ideas about what counts as a semivowel.

In the International Phonetic Alphabet, which is a system for writing down sounds, semivowels are shown with a special mark below the vowel symbol. If there isn’t enough space, the mark can be placed above instead. Before 1989, a different mark was used for this purpose.

There are special symbols for four common semivowels that match certain vowel sounds.

Some experts also suggest that other sounds, like certain rhotic sounds, a pharyngeal sound, and some post-palatal sounds, could be considered semivowels too.

Contrast with vowels

Semivowels are different from vowels because they do not form the main part of a syllable. They are also usually shorter than vowels. In some languages like Amharic, Yoruba, and Zuni, semivowels are made with a tighter shape in the mouth than their vowel sounds.

Sometimes, a semivowel can act like a vowel in a word. For example, in the English word fly, you can think of it as ending in a special vowel-like sound or as ending in a consonant followed by a vowel sound.

Contrast with fricatives and spirant approximants

Main article: Spirant approximant

Semivowels are special sounds that are similar to vowels but act differently. They help connect parts of words instead of being the main sound in a syllable. For example, in English, the letters y and w act like semivowels in words such as yes and west. These sounds are written differently in special symbols used by language experts.