An obstruent () is a speech sound such as , , or that is formed by ''obstructing'' airflow. Obstruents contrast with

sonorant In phonetics and phonology, a sonorant or resonant is a speech sound that is produced with continuous, non-turbulent airflow in the vocal tract; these are the manners of articulation that are most often voiced in the world's languages. Vowels ar ...

s, which have no such obstruction and so resonate. All obstruents are

consonant In articulatory phonetics, a consonant is a speech sound that is articulated with complete or partial closure of the vocal tract. Examples are and pronounced with the lips; and pronounced with the front of the tongue; and pronounced w ...

s, but sonorants include

vowel A vowel is a syllabic speech sound pronounced without any stricture in the vocal tract. Vowels are one of the two principal classes of speech sounds, the other being the consonant. Vowels vary in quality, in loudness and also in quantity (len ...

s as well as consonants.

Subclasses

Obstruents are subdivided into

plosives In phonetics, a plosive, also known as an occlusive or simply a stop, is a pulmonic consonant in which the vocal tract is blocked so that all airflow ceases. The occlusion may be made with the tongue tip or blade (, ), tongue body (, ), li ...

(oral stops), such as , with complete occlusion of the vocal tract, often followed by a release burst;

fricative A fricative is a consonant produced by forcing air through a narrow channel made by placing two articulators close together. These may be the lower lip against the upper teeth, in the case of ; the back of the tongue against the soft palate in ...

s, such as , with limited closure, not stopping airflow but making it turbulent; and

affricate An affricate is a consonant that begins as a stop and releases as a fricative, generally with the same place of articulation (most often coronal). It is often difficult to decide if a stop and fricative form a single phoneme or a consonant pai ...

s, which begin with complete occlusion but then release into a fricative-like release, such as .Zsiga, Elizabeth. ''The Sounds of Language: An Introduction to Phonetics and Phonology''. Wiley-Blackwell, 2013.

Voicing

Obstruents are often prototypically

voiceless In linguistics, voicelessness is the property of sounds being pronounced without the larynx vibrating. Phonologically, it is a type of phonation, which contrasts with other states of the larynx, but some object that the word phonation implies ...

, but voiced obstruents are common. This contrasts with sonorants, which are prototypically voiced and only rarely voiceless.

References

* * Obstruents {{phonetics-stub

Subclasses

Voicing

See also

References