Approximants are speech sounds that involve the articulators approaching each other but not narrowly enough nor with enough articulatory precision to create turbulent airflow. Therefore, approximants fall between fricatives, which do produce a turbulent airstream, and vowels, which produce no turbulence. This class is composed of sounds like and semivowels like and, as well as lateral approximants like.
The voiceless velar plosive or stop is a type of consonantal sound used in almost all spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨k⟩, and the equivalent X-SAMPA symbol is k.
The voiced velar plosive or stop is a type of consonantal sound used in many spoken languages.
The voiceless velar fricative is a type of consonantal sound used in some spoken languages. It was part of the consonant inventory of Old English and can still be found in some dialects of English, most notably in Scottish English, e.g. in loch, broch or saugh (willow).
The voiceless alveolar, dental and postalveolarplosives are types of consonantal sounds used in almost all spoken languages. The symbol in the International Phonetic Alphabet that represents voiceless dental, alveolar, and postalveolar plosives is ⟨t⟩, and the equivalent X-SAMPA symbol is t. The voiceless dental plosive can be distinguished with the underbridge diacritic, ⟨t̪⟩ and the postalveolar with a retraction line, ⟨t̠⟩, and the Extensions to the IPA have a double underline diacritic which can be used to explicitly specify an alveolar pronunciation, ⟨t͇⟩.
The voiced bilabial nasal is a type of consonantal sound which has been observed to occur in about 96% of spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨m⟩, and the equivalent X-SAMPA symbol is m. The bilabial nasal occurs in English, and it is the sound represented by "m" in map and rum. Very few languages are known to lack this sound. A small number of languages have been observed to lack independent nasal phonemes altogether, such as Quileute, Makah, and Central Rotokas.
The voiced labial–velar approximant is a type of consonantal sound, used in certain spoken languages, including English. It is the sound denoted by the letter ⟨w⟩ in the English alphabet; likewise, the symbol in the International Phonetic Alphabet that represents this sound is ⟨w⟩, or rarely, and the equivalent X-SAMPA symbol is w. In most languages it is the semivocalic counterpart of the close back rounded vowel. In inventory charts of languages with other labialized velar consonants, will be placed in the same column as those consonants. When consonant charts have only labial and velar columns, may be placed in the velar column, (bi)labial column, or both. The placement may have more to do with phonological criteria than phonetic ones.
The voiced alveolar fricatives are consonantal sounds. The symbol in the International Phonetic Alphabet that represents these sounds depends on whether a sibilant or non-sibilant fricative is being described.
The voiced dental fricative is a consonant sound used in some spoken languages. It is familiar to English-speakers as the th sound in father. Its symbol in the International Phonetic Alphabet is eth, or and was taken from the Old English and Icelandic letter eth, which could stand for either a voiced or unvoiced (inter)dental non-sibilant fricative. Such fricatives are often called "interdental" because they are often produced with the tongue between the upper and lower teeth, and not just against the back of the upper teeth, as they are with other dental consonants.
The voiced glottal fricative, sometimes called breathy-voiced glottal transition, is a type of sound used in some spoken languages which patterns like a fricative or approximant consonant phonologically, but often lacks the usual phonetic characteristics of a consonant. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɦ⟩, and the equivalent X-SAMPA symbol is h\.
The voiced labiodental fricative is a type of consonantal sound used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨v⟩, and the equivalent X-SAMPA symbol is v.
The voiced uvular fricative is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ʁ⟩, an inverted small uppercase letter ⟨ʀ⟩, or in broad transcription ⟨r⟩ if rhotic. This consonant is one of the several collectively called guttural R when found in European languages.
The voiced velar fricative is a type of consonantal sound that is used in various spoken languages. It is not found in most varieties of Modern English but existed in Old English. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɣ⟩, a Latinized variant of the Greek letter gamma, ⟨γ⟩, which has this sound in Modern Greek. It should not be confused with the graphically-similar ⟨ɤ⟩, the IPA symbol for a close-mid back unrounded vowel, which some writings use for the voiced velar fricative.
The voiceless labiodental fricative is a type of consonantal sound used in a number of spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨f⟩.
The voiceless palatal fricative is a type of consonantal sound used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ç⟩, and the equivalent X-SAMPA symbol is C. It is the non-sibilant equivalent of the voiceless alveolo-palatal fricative.
A voiceless postalveolar fricative is a type of consonantal sound used in some spoken languages. The International Phonetic Association uses the term voiceless postalveolar fricative only for the sound, but it also describes the voiceless postalveolar non-sibilant fricative, for which there are significant perceptual differences.
The voiceless uvular fricative is a type of consonantal sound that is used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨χ⟩, the Greek chi. The sound is represented by ⟨x̣⟩ in Americanist phonetic notation. It is sometimes transcribed with ⟨x⟩ in broad transcription.
A voiceless alveolar affricate is a type of affricate consonant pronounced with the tip or blade of the tongue against the alveolar ridge just behind the teeth. This refers to a class of sounds, not a single sound. There are several types with significant perceptual differences:
The voiceless palato-alveolar sibilant affricate or voiceless domed postalveolar sibilant affricate is a type of consonantal sound used in some spoken languages. The sound is transcribed in the International Phonetic Alphabet with ⟨t͡ʃ ⟩, ⟨t͜ʃ ⟩ ⟨tʃ ⟩, or, in broad transcription, ⟨c⟩. This affricate has a dedicated symbol U+02A7ʧLATIN SMALL LETTER TESH DIGRAPH, which has been retired by the International Phonetic Association but is still used. The alternative commonly used in American tradition is ⟨č⟩. It is familiar to English speakers as the "ch" sound in "chip".
The voiceless alveolar fricatives are a type of fricative consonant pronounced with the tip or blade of the tongue against the alveolar ridge just behind the teeth. This refers to a class of sounds, not a single sound. There are at least six types with significant perceptual differences:
