Fricatives are consonants 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 the case of German ; or the side of the tongue against the molars, in the case of Welsh. This turbulent airflow is called frication.
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.
Uvulars are consonants articulated with the back of the tongue against or near the uvula, that is, further back in the mouth than velar consonants. Uvulars may be stops, fricatives, nasals, trills, or approximants, though the IPA does not provide a separate symbol for the approximant, and the symbol for the voiced fricative is used instead. Uvular affricates can certainly be made but are rare: they occur in some southern High-German dialects, as well as in a few African and Native American languages. Uvular consonants are typically incompatible with advanced tongue root, and they often cause retraction of neighboring vowels.
Labialization is a secondary articulatory feature of sounds in some languages. Labialized sounds involve the lips while the remainder of the oral cavity produces another sound. The term is normally restricted to consonants. When vowels involve the lips, they are called rounded.
In phonetics, ejective consonants are usually voiceless consonants that are pronounced with a glottalic egressive airstream. In the phonology of a particular language, ejectives may contrast with aspirated, voiced and tenuis consonants. Some languages have glottalized sonorants with creaky voice that pattern with ejectives phonologically, and other languages have ejectives that pattern with implosives, which has led to phonologists positing a phonological class of glottalic consonants, which includes ejectives.
The voiced velar plosive or stop is a type of consonantal sound used in many spoken languages.
The voiceless uvular plosive or stop is a type of consonantal sound, used in some spoken languages. It is pronounced like a voiceless velar plosive, except that the tongue makes contact not on the soft palate but on the uvula. The symbol in the International Phonetic Alphabet that represents this sound is ⟨q⟩, and the equivalent X-SAMPA symbol is q.
The voiced uvular plosive or stop is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɢ⟩, and the equivalent X-SAMPA symbol is G\.
The voiced uvular implosive is an extremely rare type of consonantal sound. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ʛ⟩, a small capital letter G with a rightward pointing hook extending from the upper right of the letter.
In Semitic linguistics, an emphatic consonant is an obstruent consonant which originally contrasted with series of both voiced and voiceless obstruents. In specific Semitic languages, the members of this series may be realized as uvularized or pharyngealized, velarized, ejective, or plain voiced or voiceless consonants. It is also used, to a lesser extent, to describe cognate series in other Afro-Asiatic languages, where they are typically realized as ejective, implosive, or pharyngealized consonants.
A pharyngeal consonant is a consonant that is articulated primarily in the pharynx. Some phoneticians distinguish upper pharyngeal consonants, or "high" pharyngeals, pronounced by retracting the root of the tongue in the mid to upper pharynx, from (ary)epiglottal consonants, or "low" pharyngeals, which are articulated with the aryepiglottic folds against the epiglottis in the lower larynx, as well as from epiglotto-pharyngeal consonants, with both movements being combined.
In phonetics and phonology, a bilabial stop is a type of consonantal sound, made with both lips, held tightly enough to block the passage of air. The most common sounds are the stops and, as in English pit and bit, and the voiced nasal. More generally, several kinds are distinguished:
Implosive consonants are a group of stop consonants with a mixed glottalic ingressive and pulmonic egressive airstream mechanism. That is, the airstream is controlled by moving the glottis downward in addition to expelling air from the lungs. Therefore, unlike the purely glottalic ejective consonants, implosives can be modified by phonation. Contrastive implosives are found in approximately 13% of the world's languages.
In phonetics and phonology, a velar stop is a type of consonantal sound, made with the back of the tongue in contact with the soft palate, held tightly enough to block the passage of air. The most common sounds are the stops and, as in English cut and gut. More generally, several kinds are distinguished:
Doubly articulated consonants are consonants with two simultaneous primary places of articulation of the same manner. They are a subset of co-articulated consonants. They are to be distinguished from co-articulated consonants with secondary articulation; that is, a second articulation not of the same manner. An example of a doubly articulated consonant is the voiceless labial-velar plosive, which is a and a pronounced simultaneously. On the other hand, the voiceless labialized velar plosive has only a single stop articulation, velar, with a simultaneous approximant-like rounding of the lips. In some dialects of Arabic, the voiceless velar fricative has a simultaneous uvular trill, but this is not considered double articulation either.
A voiceless uvular implosive is a rare consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ʛ̥ ⟩ or ⟨qʼ↓⟩. A dedicated IPA letter, ⟨ʠ⟩, was withdrawn in 1993.
In phonetics and phonology, a palatal stop is a type of consonantal sound, made with the body of the tongue in contact with the hard palate, held tightly enough to block the passage of air. Note that a stop consonant made with the tip of the tongue curled back against the palate is called a retroflex stop.
In phonetics, an occlusive, sometimes known as a stop, is a consonant sound produced by blocking (occluding) airflow in the vocal tract, but not necessarily in the nasal tract. The duration of the block is the occlusion of the consonant. An occlusive may refer to one or more of the following, depending on the author:
